curriculum vitae date: 7/4/2017 - aalto · • training for technical assessor of accredited...

Curriculum Vitae Petri Kärhä (6)

Petri Kärhä (06/07/1966)Ruiskuja 4 A, 02940 Espoo, Finland

Telephone: +358 – 50 – 596 8469E-mail: [email protected]

CurriculumVitae

Date:7/4/20171. Applicant· Name: Kärhä, Petri Olavi

· Gender: Male

· Date and place of birth: 06/07/1966 Helsinki

· Citizenship: Finnish

· Current residence: Ruiskuja 4 A, 02940 Espoo, Finland

2. Educationanddegreesawarded· Doctor of Science, Helsinki University of Technology, Major: Measurement Science and Technology,

16.12.1997, Title: Trap detectors and their applications in the realisation of spectral responsivity,luminous intensity and spectral irradiance scales

· Licentiate of Science, Helsinki University of Technology, Major: Measurement Science and Technology,19.12.1995

· Master of Science, Helsinki University of Technology, Major: Electrical Engineering, 26.01.1993

· Title of docent: Optical Metrology, Tampere Technical University, 1.8.2005

3. Othereducationandtraining,qualificationsandskills· Pedagogical training entity on university teaching (20 ECTS credits) arranged by Helsinki University of

Technology, 2003 – 2005

· Pedagogical development programme on managing teaching (5 ECTS credits) arranged by AaltoUniversity, 8.4. – 16.9.2011

· Course LabVIEW basics I, arranged by National Instruments, 2. – 4.5.2005

· Supervisory training, arranged by Helsinki University of Technology, 24.10.2003 – 23.4.2004

· Training for technical assessor of accredited calibration laboratories, arranged by Centre for Metrologyand Accreditation 18. – 20.11.1997 (Standards EN45001 and ISO Guide 25)

4. Linguisticskills· Finnish: mother tongue

· English: Excellent both oral and written

· Swedish: Basics

· German: Basics

5. Currentposition· Senior University Lecturer at Aalto University, Department of Signal Processing and Acoustics.

Nominated on 21.6.2011. Presently supervising a research group of 8 graduate and undergraduate




students. In charge of maintenance and development of the national standards of radiometry inFinland.

6. Previousworkexperience· Aalto University School of Electrical Engineering, Senior Research Scientist, 1.1.2011 – 20.6.2011

· Aalto University School of Science and Technology, Professor, 1.1.2010 – 31.12.2010.

· TKK (former HUT), Metrology Research Institute, Professor, 1.8.2003 – 31.1.2004.

· Helsinki University of Technology (TKK, HUT), Research Scientist, Quality Manager, Lecturer, SeniorResearch Scientist (22.03.1993 – 31.12.2009).

· Helsinki University of Technology (TKK, HUT), part-time Research Assistant (01.02.1992-31.03.1992,19.10.1992-30.11.1992, 01.02.1993-31.03.1993).

· Eindhoven University of Technology, Netherlands, Trainee (01.07.1991-30.08.1991).

· Telenokia Oy, Trainee (01.06.1989-28.06.1991).

· Otatieto Oy, Electronics designer (18.05.1988-12.05.1989).

· Kone Oy, Trainee, (27.06.1983-01.07.1983, 01.08.1983-15.08.1983, 01.06.1984-15.08.1984,15.04.1985-30.08.1985, 11.05.1987-11.09.1987).

7. ResearchfundingThe applicant has had an active role in applying funding for the projects below.

· 2015 Aalto University (€110 000) Infrastructure money for purchasing research instruments.

· 2014 – 2017, Euramet, EU FP7 (€1 145 224 of which the share of Aalto €169 208, EMRP ENV59Traceability for atmospheric total column ozone. (Work package manager)

· 2013 Aalto University (€50 000) Infrastructure money for purchasing research instruments.

· 2011 – 2015, Finnish Academy of Sciences (€570 097 of which the share of Aalto € 154 818) UVRadiation Induced and Assisted Degradation of Materials. (Coordinator)

· 2011 – 2014, Euramet, EU FP7 (€1 825 182 of which the share of Aalto € 120 888) EMRP ENV09Traceability for surface spectral solar ultraviolet radiation. (Work package manager)

· 2010 – 2013, Euramet, EU FP7 (€1 568 543 of which the share of Aalto €101 996) EMRP ENG05Metrology for Solid State Lighting. (Work package manager)

· 2010, Aalto University (€30 000) Infrastructure money for purchasing research instruments.

· 2007 – 2010, TEKES (€277 500 of which the share of HUT €38 000) “UV-säteilyn materiaalivaikutukset2.” (Effects of UV-radiation on materials 2, UVEMA2).

· 2006 – 2008, HUT (€50.000 for year 2005 of which the share of MRI ~1/3). ”Opetuksen laitehankkeetvuosille 2006-2008.” (Money for purchasing research instruments.)

· 2005 – 2006, HUT (€44.000 of which the share of MRI ~€20.000), “Sulautettujen järjestelmienopetuksen integrointi ja kehittäminen: yhteistyötä yli osastorajojen.” (Money for developing teaching.MRI developed a course on ”Virtual Instrumentation.”)




· 2005 – 2007, TEKES (€279 761 of which the share of HUT € 48 488) “UV-säteilynmateriaalivaikutukset.” (Effects of UV-radiation on materials, UVEMA).

· 2004, MIKES (€224.000) for maintenance and development projects of National Standards Laboratory(applied on behalf of Prof E. Ikonen due to leave of absence).

· 2003 – 2004, EU (€412.000 of which the share of HUT €15.000) project No.EuropeAid/113156/D/SV/EE “Development of Conformity Assessment Infrastructure in the Field ofMetrology, Estonia.”

· 2003 – 2004, Nordtest (€40.900 of which the share of HUT €12.300) project No 1634-03 “High PowerFibre Optic Calibration.”

· 1998 – 2002, EU DG XII (€450.000 of which the share of HUT 96.100) SMT4-CT98-2242 “Improving theAccuracy of Ultraviolet Radiation Measurement.”

· 1997 – 2000, EU DG XII (€379.930 of which the share of HUT €114.900) SMT4-CT97-7510 “ThematicNetwork for Ultraviolet Measurements.” (Granted officially to Prof. Erkki Ikonen).

8. leadershipandsupervision· Leads a research group of optical radiometry since ~2000 consisting of 8 scientists on the average as a

Senior Research Scientist (Senior University Lecturer).

· In charge of development and maintenance of radiometric quantities and calibrations in Finland.Quality manager for the calibration services.

· Co-ordinated 15/11/1997 – 14/11/2000 the EU-project “Thematic Network for UltravioletMeasurements” under supervision of Erkki Ikonen.

· Work Package Manager in the EU-project “Improving the Accuracy for Ultraviolet RadiationMeasurement” 1/12/1998 – 30/11/2001.

· Work Package Manager in the EU-funded project EMRP ENG05 “Metrology for Solid State Lighting”1/5/2010 – 30/04/2013.

· Work Package Manager in the EU-funded project EMRP ENV03 “Traceability for surface spectral solarultraviolet radiation” 1/8/2011 – 31/07/2014.

· Coordinator in the Academy of Finland funded project “UV Radiation Induced and AssistedDegradation of Materials” 2011 – 2015.

· Project manager in various MIKES-funded metrology development projects.

· Since 1996 quality manager of the Metrology Research Institute. Initiation, development, andmaintenance of an ISO17025 based quality system. http://metrology.tkk.fi/quality/

· Instructor/supervisor in 10 Doctors’ theses, 8 Licentiate theses, and 26 Masters’ Theses, preliminaryexaminer in two Doctors theses.

· Acting Professor of Measurement Science and Technology in 2003 and 2010.

· Chairman of the Local Organizing Committee of the Newrad 2014 conference in Espoo, Finland on June24 – 27, 2014. http://newrad2014.aalto.fi/

· The applicant has acted as a secondary supervisor in the following doctoral theses:




1. Toomas Kübarsepp, Optical radiometry using silicon photodetectors, Thesis for the degree ofDoctor of Technology, HUT, Espoo, 1999, 37 p.

2. Pasi Toivanen, Detector based realisation of units of photometric and radiometric quantities,Thesis for the degree of Doctor of Technology, HUT, Espoo, 2000, 39 p.

3. Kirsti Leszczynski, Advances in traceability of solar ultraviolet radiation measurements, Thesis forthe degree of Doctor of Philosophy, University of Helsinki, 2002, 69 p. (preliminary examiner).

4. Mart Noorma, Development of detectors and calibration methods for spectral irradiance andradiometric temperature measurements, HUT, Espoo, 2005, 38 p.

5. Jari Hovila, New measurement standards and methods for photometry and radiometry , TKK,Espoo, 2005, 88 p.

6. Jouni Envall, Optical power measurements: Applications in fiber optics and ultraviolet radiometry ,TKK, Espoo, 2006, 84 p.

7. Pasi Manninen, Characterization of diffusers and light-emitting diodes using radiometricmeasurements and mathematical modeling, TKK, Espoo, 2008, 55 p.

8. Mikko Puranen, Pulsed Radar Measurements and Related Equipment, TKK, Espoo, 2009, 73 p.

9. Maija Ojanen, Spectral Irradiance and Radiation Temperature Scales, Aalto University School ofScience and Technology, Espoo, 2010, 64 + 42 p.

10. Kaisa Lakkala, High quality polar UV measurements: scientific analysis and transfer of irradiancescale, Thesis for the degree of Doctor of Philosophy, University of Helsinki, 2010, 156 p.(preliminary examiner).

11. Tuomas Poikonen, Characterization of Light Emitting Diodes and Photometer Quality Factors,Aalto University School of Electrical Engineering, Espoo, 2012, 92 p.

12. Maksim Shpak, Applications of Radiometric Measurements in Non-Contact Thermometry andMesopic Photometry, Aalto University School of Electrical Engineering, Espoo, 2016, 91 p.

9. Meritsinteachingandpedagogicalcompetence· 25 ECTC credits of pedagogical studies, including pedagogical training entity on university teaching (20

ECTS credits) arranged by Helsinki University of Technology, 2003 – 2005

· Lecturer of the courses:

- S-108.180 Electrical measurements and EMC techniques (1997-2006)

- S-108.181 Optics (2003, 2010)

- S-108.1010/1020 Principles of measurement science and technology A/Y (2005-2011)

- S-108.4010 Licentiate course in measurement science and technology (2005->)

- S-108.2010 Electrical measurements (2007-2011)

- S-108.3030 Virtual Instrumentation (2007 - 2010)

- ELEC-C5070 Electronics workshop (2014->).

· Has actively developed teaching methods as part of pedagogical education. Teaching methods includee.g. problem-based learning, hands-on exercises, and home exams.




· Secondary supervisor (instructor / preliminary examiner) in 11 doctoral theses, instructor / supervisorin 42 licentiate, master or candidate theses.

· Teaching awards

- 2007, TKK, Department of Electrical and Communications Engineering, Bonus for good teaching in2006 based on student feedback.

- 2006, TKK, Department of Electrical and Communications Engineering, Bonus for good teaching in2005 based on student feedback.

- 1996, HUT, Award for good teaching.

10. Awards,prizesandhonours

11. Otheracademicmerits· 1997 – > FINAS, SWEDAC, RvA, UKAS (Technical assessor for accreditation) Has assessed quality systems

of 4 accredited laboratories in Finland, one in Sweden, one in the Netherlands and one in the UK. Alsoacts as the quality manager of the Metrology Research Institute

· 1998 – > Reviewer for the following journals: Photochemistry and Photobiology, Journal of Compoundsand Alloys, Journal of Optics A: Pure and Applied Optics, Applied Optics, Measurement Science andTechnology, Review of Scientific Instruments, Radiation Protection Dosimetry, Solid State Electronics,Atmospheric Chemistry and Physics, IEEE Transactions on Instrumentation & Measurement, RadiationMeasurements

· 1998 – 2000 EA international Task Force – Photometry and Radiometry (Member)

· 1999 – 2003 CIE TC2-47 Methods of characterization and calibration of broad-band UV radiometers(Member)

· 2000 – 2007 MIKES Advisory Commission for Metrology, Optical quantities expert group (Member)

· 2002, 2004 The Research Council of Norway (Referee)

· Editor-in-chief of UVNews. (11 issues, total of 588 pages, during 1998 – 2016).http://metrology.hut.fi/uvnet/reports.htm

12. Scientificandsocietalimpactofresearch· 66 articles in international refereed journals, 110 international conference presentations, 36 national

conference presentations, 36 other publications. H-index = 12. Most important articles listed below.

1. A. Haapalinna, P. Kärhä, and E. Ikonen, “Spectral reflectance of silicon photodiodes,” Appl. Opt. 37,729-732 (1998).

2. P. Kärhä, N. J. Harrison, S. Nevas, W. S. Hartree and I. Abu-Kassem, “Intercomparison ofcharacterisation techniques of filter radiometers in the ultraviolet region,” Metrologia 40, S50-S54(2003).

3. J. Envall, P. Kärhä, and E. Ikonen, “Calibration of broadband ultraviolet detectors by measurementof spectral irradiance responsivity,” Rev. Sci. Instrum. 77, 063110, 8 p. (2006).

4. P. Kärhä, A. Heikkilä, K. Ruokolainen, and M. Kaunismaa, “A novel facility for ageing materials withnarrow-band UV radiation exposure,” Rev. Sci. Instrum. 82, 023107, 6 p. (2011).




5. Tomi Pulli, Petri Kärhä, and Erkki Ikonen, “A method for optimizing the cosine response of solar UVdiffusers,” J. Geophys. Res. Atmos. 118, 7897 –7904 (2013).

6. A. Heikkilä and P. Kärhä, “Photoyellowing revisited: Determination of an action spectrum ofnewspaper,” Polym. Degrad. Stab. 99, 190 – 195(2014). DOI:http://dx.doi.org/10.1016/j.polymdegradstab.2013.11.006

7. Maksim Shpak, Petri Kärhä, Geiland Porrovechio, Marek Smid, and Erkki Ikonen, “Luminance meterfor photopic and scotopic measurements in the mesopic range,” Meas. Sci. Technol. 25, 095001-1–7 (2014).

8. Hans Baumgartner, Anna Vaskuri, Petri Kärhä, and Erkki Ikonen, “A temperature controller for highpower light emitting diodes based on resistive heating and liquid cooling,” Appl. Therm. Eng. 71,317–323 (2014).

9. Tomi Pulli, Timo Dönsberg, Tuomas Poikonen, Farshid Manoocheri, Petri Kärhä, and Erkki Ikonen,“Advantages of white LED lamps in photometry,” Light: Science & Applications 4, e332, (2015).doi:10.1038/lsa.2015.105.

10. Anna Vaskuri, Petri Kärhä, Anu Heikkilä, and Erkki Ikonen, “High-Resolution Setup for MeasuringWavelength Sensitivity of Photoyellowing of Translucent Materials,” Rev. Sci. Instrum. 86, 103103, 8p. (2015).

13. Positionsoftrustinsocietyandothersocietalmerits· 2014 – > Aalto University, Academic Affairs Committee of the School of Electrical Engineering (member)

· 2012 – > Otaniemen TEK-tutkijat, (Researchers union) Chairman

· 2012 – 2016 Aalto / JUKO, shop steward of the researchers

· 2011 – 2013 Aalto University, Academic Affairs Committee of the School of Electrical Engineering (vicemember)

· 2010 – > Academic Affairs Committee of the Aalto University (vice member)

· 2008 – 2011 TKK / JUKO, shop steward of the researchers and head shop steward of the JUKO

· 2008 – 2010 TKK, Council for co-operation (member)

· 2005 – 2007 TKK, Strategy working group (member)

· 2005 – 2009 TKK, Council for education and research (member)

· 2001 – 2008 TKK, Faculty of Electrical and Communications Engineering, Scientific Committee(Member)

· Finnish military rank: Staff Sergeant

14. Othermerits

Petri Kärhä (060766-193S)Ruiskuja 4 A, 02940 Espoo, Finland


List of Publications Petri Kärhä Page 1 (20)

Petri KärhäList of publications 07/04/2017

A1 Peer-reviewed scientific articles1. P. Kärhä, H. Fagerlund, A. Lassila, H. Ludvigsen, F. Manoochehri, and E. Ikonen,

“Optical power and transmittance measurements and their use in detector-based realizationof the luminous intensity scale,” Opt. Eng. 34, 2611-2618 (1995).

2. E. Ikonen, P. Kärhä, A. Lassila, F. Manoochehri, H. Salvén, and L. Liedquist,“Radiometric realization of candela with trap detector,” Metrologia 32, 689-692(1995/96).

3. L. Liedquist, E. Ikonen, P. Kärhä, and H. Salvén, “Intercomparison of luminous intensityscales based on trap detectors and based on incandescent lamps,” Metrologia 32, 681-684(1995/96).

4. P. Kärhä, R. Visuri, K. Leszczynski, F. Manoochehri, K. Jokela, and E. Ikonen,“Detector-based calibration method for high-accuracy solar UV measurements,”Photochem. Photobiol. 64, 340-343 (1996).

5. T. Kübarsepp, P. Kärhä, and E. Ikonen, “Characterization of a polarization-independenttransmission trap detector,” Appl. Opt. 36, 2807-2812 (1997).

6. P. Kärhä, P. Toivanen, F. Manoochehri, A. Haapalinna, and E. Ikonen, “A detector-basedabsolute spectral irradiance scale in the 380-900-nm spectral range,” Appl. Opt. 36, 8909 -8918 (1997).

7. A. Haapalinna, P. Kärhä, and E. Ikonen, “Spectral reflectance of silicon photodiodes,”Appl. Opt. 37, 729-732 (1998).

8. T. Kübarsepp, A. Haapalinna, P. Kärhä, and E. Ikonen, “Nonlinearity measurements ofsilicon photodetectors,” Appl. Opt. 37, 2716-2722 (1998).

9. P. Kärhä, P. Toivanen, A. Haapalinna, F. Manoochehri, and E. Ikonen, “Filter radiometrybased on direct utilization of trap detectors,” Metrologia 35, 255-259 (1998).

10. F. Manoochehri, P. Kärhä, L. Palva, P. Toivanen, A. Haapalinna, and E. Ikonen,“Characterisation of optical detectors using high-accuracy instruments,” AnalyticaChimica Acta 380, 327-337 (1999).

11. P. Toivanen, F. Manoochehri, P. Kärhä, and E. Ikonen, “Method for characterization offilter radiometers,” Appl. Opt. 38, 1709-1713 (1999).

12. A. Haapalinna, T. Kübarsepp, P. Kärhä, and E. Ikonen, “Measurement of absolutelinearity of photodetectors with a diode laser,” Meas. Sci. Technol. 10, 1075-1078 (1999).

13. T. Kübarsepp, P. Kärhä, and E. Ikonen, “Interpolation of the spectral responsivity ofsilicon photodetectors in the near ultraviolet,” Appl. Opt. 39, 9-15 (2000).

14. P. Kärhä, T. Kübarsepp, F. Manoochehri, P. Toivanen, E. Ikonen, R. Visuri, L. Ylianttila,and K. Jokela, “Portable detector-based primary scale of spectral irradiance,” J. Geophys.Res. 105, 4803-4807 (2000).




15. K. Jokela, L. Ylianttila, R. Visuri, K. Leszczynski, P. Kärhä, and E. Ikonen,“Intercomparison of lamp and detector-based UV-irradiance scales for solar UVradiometry,” J. Geophys. Res. 105, 4821-4827 (2000).

16. P. Toivanen, P. Kärhä, F. Manoocheri, and E. Ikonen, “Realisation of the unit ofluminous intensity at the HUT,” Metrologia 37, 131-140 (2000).

17. T. Kübarsepp, P. Kärhä, F. Manoochehri, S. Nevas, L. Ylianttila, and E. Ikonen, “Spectralirradiance measurements of tungsten lamps with filter radiometers in the spectral range290 nm to 900 nm,” Metrologia 37, 305-312 (2000).

18. P. Toivanen, J. Hovila, P. Kärhä, and E. Ikonen, “Realizations of the units of luminanceand spectral radiance at the HUT,” Metrologia 37, 527-530 (2000).

19. K.D. Stock, K.-H. Raatz, P. Sperfeld, J. Metzdorf, T. Kübarsepp, P. Kärhä, E. Ikonen,and L. Liedquist, “Detector-stabilized FEL lamps as transfer standards in an internationalcomparison of spectral irradiance,” Metrologia 37, 441-444 (2000).

20. T. Kübarsepp, H. Yoon, S. Nevas, P. Kärhä, and E. Ikonen, “Comparison of spectralirradiance scales between NIST and HUT,” Metrologia 39, 399-402 (2002).

21. P. Kärhä, N. J. Harrison, S. Nevas, W. S. Hartree and I. Abu-Kassem, “Intercomparisonof characterisation techniques of filter radiometers in the ultraviolet region,” Metrologia40, S50-S54 (2003).

22. P. Kärhä, L. Ylianttila, T. Koskela, K. Jokela and E. Ikonen, “A portable field calibratorfor solar ultraviolet measurements,” Metrologia 40, S17-S20 (2003).

23. L. Ylianttila, K. Jokela and P. Kärhä, “Ageing of DXW-lamps,” Metrologia 40, S120-S123 (2003).

24. J. Hovila, P. Kärhä, L. Mansner, and E. Ikonen, “Evaluation of calibration methods of aphotometer measuring maritime light-emitting diode buoy lanterns,” Opt. Eng. 43, 170-173 (2004).

25. S. Nevas, E. Ikonen, P. Kärhä, and T. Kübarsepp, “Effect of correlations in fitting spectralirradiance data,” Metrologia 41, 246-250 (2004).

26. J. Envall, P. Kärhä and E. Ikonen, “Measurements of fibre optic power using photodiodeswith and without an integrating sphere,” Metrologia 41, 353-358 (2004).

27. M. Noorma, P. Kärhä, A. Lamminpää, S. Nevas, and E. Ikonen, “Characterization ofGaAsP trap detector for radiometric measurements in ultraviolet wavelength region,” Rev.Sci. Instrum. 76, 033110-1 – 033110-5 (2005).

28. J. Envall, A. Andersson, J. C. Petersen, and P.Kärhä, “Realization of the scale of high fiberoptic power at three national standards laboratories,” Appl. Opt. 44, 5013-5017 (2005).

29. J. Hovila, M. Mustonen, P. Kärhä, and E. Ikonen, “Determination of the diffuser referenceplane for accurate illuminance responsivity calibrations,” Appl. Opt. 44, 5894-5898(2005).

30. M. Puranen, P. Kärhä, and P. Eskelinen, “Fiber-optic radar calibration,” IEEE Aerospaceand Electronic Systems Magazine 20, 30-33 (2005).




31. J. Envall, L. Ylianttila, H. Moseley, A. Coleman, M. Durak, P. Kärhä, and E. Ikonen,“Investigation of comparison methods for UVA irradiance responsivity calibrationfacilities,” Metrologia 43, S27-S30 (2006).

32. P. Manninen, J. Hovila, L. Seppälä, P. Kärhä, L. Ylianttila, and E. Ikonen,“Determination of distance offsets of diffusers for accurate radiometric measurements,”Metrologia 43, S120-S124 (2006).

33. A. Lamminpää, M. Noorma, T. Hyyppä, F. Manoocheri, P. Kärhä, and E. Ikonen,“Characterization of germanium photodiodes and trap detector,” Meas. Sci. Technol. 17,908-912 (2006).

34. J. Envall, P. Kärhä, and E. Ikonen, “Calibration of broadband ultraviolet detectors bymeasurement of spectral irradiance responsivity,” Rev. Sci. Instrum. 77, 063110, 8 p.(2006).

35. P. Manninen, J. Hovila, P. Kärhä, and E. Ikonen, “Method for analyzing luminousintensity of light-emitting diodes,” Meas. Sci. Technol. 18, 223-229 (2007).

36. A. Heikkilä, A. Tanskanen, P. Kärhä, and K. Hanhi, “Adjusting timing of weathering testto account for seasonal variations in UV exposure,” Polym. Degrad. Stab. 92, 675-683(2007).

37. E. Ikonen, P. Manninen, and P. Kärhä, “Modeling distance dependence of LEDilluminance,” Light & Engineering 15, 57-61(2007).

38. P. Kärhä and T. Jaakkola, “Simple active method for reducing magnetic interference in athermoelectrically cooled photomultiplier tube,” Rev. Sci. Instrum. 79, 043102, 3 p.(2008).

39. P. Manninen, P. Kärhä, and E. Ikonen, “Determining the irradiance signal from anasymmetric source with directional detectors: application to calibrations of radiometerswith diffusers,” Appl. Opt. 47, 4714-4722 (2008).

40. M. Ojanen, · V. Ahtee, · M. Noorma, · T. Weckström, · P. Kärhä, and · E. Ikonen, “FilterRadiometers as a Tool for Quality Assurance of Temperature Measurements with LinearPyrometers,” Int. J. Thermophys. 29, 1084–1093 (2008).

41. T. Poikonen, P. Kärhä, P. Manninen, F. Manoocheri, and E. Ikonen, “Uncertainty analysisof photometer quality factor f1’,” Metrologia 46, 75–80 (2009).

42. A. Heikkilä, P. Kärhä, A. Tanskanen, M. Kaunismaa, T. Koskela, J. Kaurola, T. Ture, andS. Syrjälä, “Characterizing a UV chamber with mercury lamps for assessment ofcomparability to natural UV conditions,” Polymer Testing 28, 57-65 (2009).

43. T. Widmaier, T. Salmela, P. Kuosmanen, J. Juhanko, P. Kärhä, and J. Uusimäki,“Reducing thickness variation of hot rolled steel strip by non-circular backup rollgeometry,” Ironmaking and Steelmaking 36, 133-140 (2009).

44. M. Ojanen, M. Shpak, P. Kärhä, R. Leecharoen, and E. Ikonen, “Report of the SpectralIrradiance Comparison EURAMET.PR-K1.a.1 between MIKES (Finland) and NIMT(Thailand),” Metrologia 44, Tech. Suppl., 16 pages (2009).




45. M. Ojanen, M. Shpak, P. Kärhä, R. Leecharoen, and E Ikonen, “Uncertainty evaluationfor linking a bilateral key comparison with the corresponding CIPM key comparison,”Metrologia 46, 397-403 (2009).

46. M. Ojanen, K. Anhalt, J. Hartmann, S. Schiller, T. Weckström, P. Kärhä, M. Heinonen,and E. Ikonen, “Comparison of the radiation temperature scales between MIKES andPTB,” Measurement 43, 183-189 (2010).

47. P. Manninen, T. Koskela, L. Ylianttila, P. Kärhä, and E. Ikonen, “Estimation of the opticalreceiving plane positions of solar spectroradiometers with spherical diffusers on the basisof spatial responsivity data,” Opt. Lett. 34, 3241–3243 (2009).

48. T. Poikonen, P. Manninen, P. Kärhä, and E. Ikonen, “Multifunctional integrating spheresetup for luminous flux measurements of light emitting diodes,” Rev. Sci. Instrum. 81,023102, 7 p. (2010).

49. M. Ojanen, P. Kärhä, and E. Ikonen, “Spectral irradiance model for tungsten halogenlamps in 340-850 nm wavelength range,” Appl. Opt. 49, 880 – 886 (2010).

50. M. Shpak, L. Sainiemi, M. Ojanen, P. Kärhä, M. Heinonen, S. Franssila, E. Ikonen,“Optical temperature measurements of silicon microbridge emitters,” App. Opt. 49, 1489– 1493 (2010).

51. M. Shpak, P. Kärhä, M. Ojanen, E. Ikonen and M. Heinonen, “Optical temperaturemeasurement method for glowing microcomponents,” Int. J. Thermophys. (in press).

52. P. Kärhä, A. Heikkilä, K. Ruokolainen, and M. Kaunismaa, “A novel facility for ageingmaterials with narrow-band UV radiation exposure,” Rev. Sci. Instrum. 82, 023107, 6 p.(2011).

53. T. Poikonen, T. Pulli, A. Vaskuri, H. Baumgartner, P. Kärhä, and E. Ikonen, “LuminousEfficacy Measurement of Solid-State Lamps,” Metrologia 49, S135 – S140 (2012).

54. M. Ojanen, P. Kärhä, S. Nevas, A. Sperling, H. Mäntynen, and E. Ikonen, “Double-coiledtungsten filament lamps as absolute spectral irradiance reference sources,” Metrologia 49,S53 – S58 (2012).

55. T. Poikonen, P. Blattner, P. Kärhä, and E. Ikonen, “Uncertainty analysis of photometerdirectional response index f2 using Monte Carlo simulation,” Metrologia 49, 727–736(2012).

56. Tomi Pulli, Petri Kärhä, and Erkki Ikonen, “A method for optimizing the cosine responseof solar UV diffusers,” J. Geophys. Res. Atmos. 118, 7897 –7904 (2013).

57. J-M. Hirvonen, T. Poikonen, A. Vaskuri, P. Kärhä, and E. Ikonen, ”Spectrally adjustablequasi-monochromatic radiance source based on LEDs and its application for measuringspectral responsivity of a luminance meter,” Meas. Sci. Technol. 24, 115201, 8 p. (2013).

58. A. Heikkilä and P. Kärhä, “Photoyellowing revisited: Determination of an action spectrumof newspaper,” Polym. Degrad. Stab. 99, 190 – 195(2014). DOI:http://dx.doi.org/10.1016/j.polymdegradstab.2013.11.006

59. Maksim Shpak, Petri Kärhä, Geiland Porrovechio, Marek Smid, and Erkki Ikonen,“Luminance meter for photopic and scotopic measurements in the mesopic range,” Meas.Sci. Technol. 25, 095001-1–7 (2014).




60. Hans Baumgartner, Anna Vaskuri, Petri Kärhä, and Erkki Ikonen, “A temperaturecontroller for high power light emitting diodes based on resistive heating and liquidcooling,” Appl. Therm. Eng. 71, 317–323 (2014).

61. Timo Dönsberg, Tomi Pulli, Tuomas Poikonen, Hans Baumgartner, Anna Vaskuri, MeelisSildoja, F Manoocheri, Petri Kärhä, and Erkki Ikonen, “New source and detectortechnology for the realization of photometric units,” Metrologia 51, S276–S281 (2014).

62. Tomi Pulli, Timo Dönsberg, Tuomas Poikonen, Farshid Manoocheri, Petri Kärhä, andErkki Ikonen, “Advantages of white LED lamps in photometry,” Light: Science &Applications 4, e332, (2015). doi:10.1038/lsa.2015.105.

63. H. Baumgartner, D. Renoux, P. Kärhä, T. Poikonen, T. Pulli, and E. Ikonen, “Natural andaccelerated ageing of LED lamps,” Lighting Res. Technol. 48, 930–942 (2016). doi:10.1177/1477153515603757

64. M. Shpak, P. Kärhä, and E. Ikonen, “Mathematical limitations of the CIE mesopicphotometry system,” Lighting Res. Technol. 49, 111–121 (2017). doi:10.1177/147715351559943

65. Anna Vaskuri, Petri Kärhä, Anu Heikkilä, and Erkki Ikonen, “High-Resolution Setup forMeasuring Wavelength Sensitivity of Photoyellowing of Translucent Materials,” Rev. Sci.Instrum. 86, 103103, 8 p. (2015).

66. Anna Vaskuri, Hans Baumgartner, Petri Kärhä, György Andor, and Erkki Ikonen,”Modeling the spectral shape of InGaAlP-based red light-emitting diodes,” J. Appl. Phys.118, 203103, 7. p. (2015); http://dx.doi.org/10.1063/1.4936322

67. Hans Baumgartner, Anna Vaskuri, Petri Kärhä, and Erkki Ikonen, “Temperature invariantenergy value in LED spectra,” Appl. Phys. Lett. 109, 231103 (2016); doi:10.1063/1.4971831

68. Tomi Pulli, Saulius Nevas, Omar El Gawhary, Steven Van Den Berg, Janne Askola, PetriKärhä, Farshid Manoocheri, and Erkki Ikonen, “Nonlinearity characterization of arrayspectroradiometers for the solar UV measurements,” Appl. Opt. 56, 3077 – 3086 (2017).

A4 Scientific conference proceedings1. Tomi Pulli, Petri Kärhä, Joop Mes, Josef Schreder, Priit Jaanson, and Farshid Manoocheri,

“Improved Diffusers for Solar UV Spectroradiometers,” Radiation Processes in theAtmosphere and Ocean (IRS2012), AIP Conference Proceedings 1531, 813 – 816 (2013).

2. Petri Kärhä, Anna Vaskuri, Nikke Mikkonen, Julian Gröbner, Luca Egli, and ErkkiIkonen, “Monte Carlo analysis of uncertainty of total atmospheric ozone derived frommeasured spectra,” International Radiation Symposium IRS 2016, AIP ConferenceProceedings 1810, 110005 (2017); doi: http://dx.doi.org/10.1063/1.4975567.

3. Anna Vaskuri, Petri Kärhä, Anu Heikkilä, and Erkki Ikonen, “Facility for determiningaction spectra of UV photodegradation,” International Radiation Symposium IRS 2016,AIP Conference Proceedings 1810, 110011 (2017); http://doi.org/10.1063/1.4975573.

4. K. Lakkala, A. Heikkilä, P. Kärhä, I. Ialongo, T. Karppinen, J. M. Karhu, A. V. Lindfors,and O. Meinander, “25 years of spectral UV measurements at Sodankylä,” International




Radiation Symposium IRS 2016, AIP Conference Proceedings 1810, 110006 (2017);http://doi.org/10.1063/1.4975568.

5. A. Heikkilä, S. Kazadzis, O. Meinander, A. Vaskuri, P. Kärhä, V. Mylläri, S. Syrjälä, andT. Koskela, “UV exposure in artificial and natural weathering: A comparative study,”International Radiation Symposium IRS 2016, AIP Conference Proceedings 1810,110004 (2017); doi: 10.1063/1.4975566.

6. A. Heikkilä, K. Uusitalo, P. Kärhä, A. Vaskuri, J. Kaurola, K. Lakkala, and T. Koskela,“Variability of daily UV index in Jokioinen, Finland, in 1995-2015,” AIP ConferenceProceedings 1810, 110003 (2017); doi: 10.1063/1.4975565.

B1 Non-refereed journal articles1. P. Kärhä and E. Ikonen, “Construction and test measurements of a trap detector for

optical power measurements,” Metrology research institute report 2/93, HUT, Espoo,1993, 28 p.

2. A. Lassila, P. Kärhä, and E. Ikonen, “Comparison of silicon trap detectors with cryogenicabsolute radiometer,” Metrology research institute report 5/94, HUT, Espoo, 1994, 5 p.

3. P. Toivanen, A. Lassila, F. Manoochehri, P. Kärhä, and E. Ikonen, “A new method forcharacterization of filter radiometers,” Metrology research institute report 12/98, HUT,Espoo, 1998, 7 p.

4. T. Kübarsepp, P. Kärhä, F. Manoocheri, S. Nevas, L. Ylianttila and E. Ikonen, Absolutespectral irradiance measurements of quartz-halogen tungsten lamps in the spectral range290-900 nm, Metrology Research Institute, Helsinki University of Technology, Espoo1999, Metrology Research Institute Report 14/99, 13 p.

5. P. Kärhä (editor), Annual report 2000, Metrology Research Institute, Helsinki Universityof Technology, Espoo 2000, Metrology Research Institute Report 18/2001, 64 p.



8. J. Envall, P. Kärhä, and E. Ikonen, Calibration of broadband ultraviolet detectors bymeasurement of spectral irradiance responsivity, Metrology Research Institute Report30/2006, 18 p.

9. M. Noorma, V. Ahtee, A. Lamminpää, P. Kärhä, F. Manoocheri, T. Weckström, and E.Ikonen, Radiometric temperature measurements with absolutely characterized filterradiometers in irradiance mode, Metrology research institute report 24/2005, TKK,Espoo, March 2005, 11 p.

B3 Non-refereed international conference proceedings1. T. Kübarsepp and P. Kärhä, “A trap detector for precise measurements of optical radiation

power,” Baltic electronics conference BEC´94, Tallin, Estonia, 1994, Proceedings of the4th biennial conference, pp. 195-200.




2. P. Kärhä, H. Fagerlund, A. Lassila, F. Manoochehri, E. Ikonen, K. Jokela, K.Leszczynski, and R. Visuri, “Detector-based calibration of a solar UV spectroradiometer,”Proceedings of International conference on past, present and future climate, Helsinki 22-25.08.1995, pp. 397-400.

3. P. Toivanen, H. Nyberg, P. Kärhä, A. Lassila, F. Manoochehri, and E. Ikonen, “Detector-based realization of the candela,” Proceedings of the XIV Imeco world congress 2, 1997,pp. 114-119.

4. P. Kärhä, P. Toivanen, A. Haapalinna, F. Manoochehri, and E. Ikonen, “Filter radiometrybased on direct utilization of trap detectors” in Proceedings of the NEWRAD ’97,Arizona, USA, October 27-29, 1997, p. 025.

5. P. Kärhä, T. Kübarsepp, R. Visuri, P. Toivanen, F. Manoochehri, K. Jokela, and E.Ikonen, “The Finnish scale for spectral irradiance in the ultraviolet region” in Abstracts ofthe European Conference on Atmospheric UV Radiation, Helsinki, Finland, June 29-July2, 1998, p. 18.

6. K. Jokela, P. Kärhä, E. Ikonen, L. Ylianttila, and R. Visuri, “Detector-based calibration ofsolar UV radiometers,” in Abstracts of the European Conference on Atmospheric UVRadiation, Helsinki, Finland, June 29-July 2, 1998, p. 19.

7. F. Manoochehri, P. Kärhä, L. Palva, P. Toivanen, A. Haapalinna, and E. Ikonen,“Characterisation of optical detectors using high-accuracy instruments,” in Abstracts ofthe Council for Optical Radiation Measurement and the Ultra Violet Spectrometry GroupJoint Conference Optical Spectrometry, Sussex, UK, June 29 - July 1, 1998.

8. T. Kübarsepp, P. Kärhä and E. Ikonen, “Interpretation of UV-effects on the internalquantum efficiency of silicon photodetectors,” Third Workshop of the Thematic Networkfor UV-Measurements, Teddington, UK, September 8-10, 1999, UVNews, Issue 3/1999,p. 18.

9. T. Kübarsepp, P. Kärhä and E. Ikonen, “Interpretation of UV irradiation effects on theresponsivity of silicon photodetectors,” in Abstracts of Newrad '99, Madrid, Spain,October 25-27, 1999, p. 15.

10. K.D. Stock, K.H. Raatz, T. Kübarsepp, P. Kärhä, E. Ikonen and L. Liedquist, “Detectorstabilized FEL lamps as transfer standards in an international comparison of spectralirradiance,” in Abstracts of Newrad '99, Madrid, Spain, October 25-27, 1999, p. 25.

11. P. Toivanen, F. Manoocheri, P. Kärhä, E. Ikonen and A. Lassila, “Measurements ofirradiance responsivity and aperture area by direct optical method,” in Abstracts ofNewrad '99, Madrid, Spain, October 25-27, 1999, p. 19.

12. P. Toivanen, J. Hovila, P. Kärhä and E. Ikonen, “Realisation of the units of luminance andspectral radiance at the Helsinki University of Technology,” in Abstracts of Newrad '99,Madrid, Spain, October 25-27, 1999, p. 20.

13. F. Manoocheri, S. Nevas, P. Kärhä, P. Toivanen and E. Ikonen, “Determination ofuncertainties due to spectral transmittance measurements in filter radiometry,” inAbstracts of Newrad '99, Madrid, Spain, October 25-27, 1999, p. 32.




14. P. Kärhä, T. Kübarsepp, F. Manoocheri, S. Nevas, P. Toivanen and E. Ikonen, “Extensionof the trap-detector-based spectral irradiance scale into the ultraviolet region,” inAbstracts of Newrad '99, Madrid, Spain, October 25-27, 1999, p. 39.

15. T. Kübarsepp, P. Kärhä, F. Manoocheri, S. Nevas, P. Toivanen, and E. Ikonen, “Compactfacility for High-accuracy measurements of spectral irradiance in the UV-VIS-NIRregion,” in Proceedings of the Northern Optics 2000, Uppsala, Sweden, June 6 – 8, 2000,p. 141.

16. P. Kärhä, L. Ylianttila, T. Koskela, K. Jokela and E. Ikonen, “A portable field calibratorfor solar ultraviolet measurements”, in Abstracts of NEWRAD2002, 8th InternationalConference on New Developments and Applications in Optical Radiometry, Gaithersburg,USA, 2002, p. 30.

17. P. Kärhä, N. Harrison, S. Nevas, B. Hartree and I. Abu-Kassem, “Intercomparison ofcharacterization techniques of filter radiometers in the ultraviolet region”, in Abstracts ofNEWRAD2002, 8th International Conference on New Developments and Applications inOptical Radiometry, Gaithersburg, USA, 2002, p. 38.

18. T. Kübarsepp, H.W.Yoon, S. Nevas, P. Kärhä and E. Ikonen, “Comparison measurementsof spectral irradiance between NIST and HUT”, in Abstracts of NEWRAD2002, 8th

International Conference on New Developments and Applications in Optical Radiometry,Gaithersburg, USA, 2002, p. 102.

19. P. Kärhä, J. Envall and E, Ikonen, “Study of fiber optic power measurements usingphotodiodes with and without integrating sphere,” in Abstracts of NEWRAD2002, 8th

International Conference on New Developments and Applications in Optical Radiometry,Gaithersburg, USA, 2002, p. 129.

20. L. Ylianttila, K. Jokela and P. Kärhä, “Ageing of DXW-lamps”, in Abstracts ofNEWRAD2002, 8th International Conference on New Developments and Applications inOptical Radiometry, Gaithersburg, USA, 2002, p. 119.

21. M. Noorma, P. Kärhä, T. Jankowski, L. Uusipaikka, T. Weckström and E. Ikonen,“Absolute method for radiation temperature measurements,” Estonian Physics Days,Tartu, Estonia, Annual of EPS 2003, 68 – 69 (2003).

22. M. Noorma, P. Kärhä and E. Ikonen, “Systematic change in areas of the aperture used inoptical radiometry,” Estonian Physics Days, Tartu, Estonia, Annual of EPS 2003, 74 – 75(2003).

23. P. Kärhä, L. Ylianttila, K. Jokela and E. Ikonen, “Improvements in dissemination ofspectral irradiance calibrations,” Geophysical Research Abstracts 5, Abstract No. EAE03-A-09413, Nice, France (2003).

24. T. Jankowski, P. Kärhä, M. Noorma, T. Weckström, L. Uusipaikka and E. Ikonen,“Detector based method for radiation temperature measurements,” Northern Optics 2003,Espoo, June 16 – 18, in Helsinki University of Technology Publications in EngineeringPhysics, TKK-F-A822, p. 74.

25. M. Noorma, P. Kärhä and E. Ikonen, “Instabilities in the areas of precision apertures,”Northern Optics 2003, Espoo, June 16 – 18, in Helsinki University of TechnologyPublications in Engineering Physics, TKK-F-A822, p. 77.




26. J. Envall, P. Kärhä and E. Ikonen, “Development of spectral comparator facility tocalibrate ultraviolet detectors with low sensitivity,” Northern Optics 2003, Espoo, June 16– 18, in Helsinki University of Technology Publications in Engineering Physics, TKK-F-A822, p. 80.

27. P. Kärhä, S. Nevas, M. Noorma and E. Ikonen, “HUT Primary scale of spectralirradiance,” Annual meeting of the Nordic Ozone Group (NOG), Helsinki, April 14-15,2004, in NOG 2004 Abstracts, Helsinki (2004).

28. E. Ikonen, J. Hovila, P. Kärhä, and L. Mansner, “Evaluation of calibration methods of aphotometer measuring maritime led buoy lanterns,” Proceedings of the CIE Symposium2004 on LEDs (in press).

29. M. Noorma, P. Kärhä, T. Jankowski, F. Manoocheri, T. Weckström, L. Uusi-paikka, andE. Ikonen, “Absolute detector-based radiometric temperature scale”, in the Proceedings ofTEMPMEKO 2004, Cavtat, Croatia, June 21-26, 2004, p 101-106. (published in 2005).

30. A. Andersson, J. Envall, P. Kärhä, E. Ikonen, and J. Petersen, “Results and ex-periencesfrom high fibre optic power calibration comparison”, in Proceedings of 12th InternationalMetrology Congress, Lyon, France, June 20-23, 2005 (CD, 6 p.)

31. Antti Lamminpää, Mart Noorma, Tuomas Hyyppä, Farshid Manoocheri, Petri Kärhä, andErkki Ikonen, “Characterization of germanium detectors for applications of spectralirradiance measurements,” in Proceedings of 2005 NCSLI Workshop & Symposium,Advances in Science and Technology – Their Impact on Metrology, Washington D.C.,USA, August 7-11, 2005 ISBN 1-58464-046-4, CD

32. A. Lamminpää, M. Noorma, T. Hyyppä, F. Manoocheri, P. Kärhä, and E. Ikonen,“Characterization of germanium photodiodes and trap detector”, in Proceedings of 9thInternational Conference on New Developments and Applications in Optical Radiometry(NEWRAD 2005), Davos, Switzerland, October 17–19, 2005, p. 209-210.

33. S. Nevas, A. Lamminpää, P. Kärhä, and E. Ikonen, “Analysis of the uncertaintypropagation through fitting spectral irradiance data”, in Proceedings of 9th In-ternationalConference on New Developments and Applications in Optical Ra-diometry (NEWRAD2005), Davos, Switzerland, October 17–19, 2005, p. 263-264.

34. P. Kärhä, P. Manninen, J. Hovila, L. Seppälä and E. Ikonen “Determination of luminousintensity of light-emitting diodes with modified inverse-square law”, in Proceedings of 9thInternational Conference on New Developments and Ap-plications in Optical Radiometry(NEWRAD 2005), Davos, Switzerland, October 17–19, 2005, p. 211-212.

35. J. Hovila, P. Manninen, L. Seppälä, P. Kärhä, L. Ylianttila and E. Ikonen “De-terminationof the diffuser reference plane for accurate photometric and radio-metric measurements”,in Proceedings of 9th International Conference on New Developments and Applicationsin Optical Radiometry (NEWRAD 2005), Davos, Switzerland, October 17–19, 2005, p.201-202.

36. J. Envall, B.C. Johnson, P. Kärhä, T. Larason, and E. Ikonen, “Comparison of spectralirradiance responsivity scales of TKK and Nist in the UVA region”, in Proceedings of 9thInternational Conference on New Developments and Appli-cations in Optical Radiometry(NEWRAD 2005), Davos, Switzerland, October 17–19, 2005, p. 147-148.




37. P. Sipilä, R. Rajala, P. Kärhä, A. Manninen, and E. Ikonen, “Calibration of cur-rent-to-voltage converters for radiometric applications at picoampere level”, in Proceedings of 9thInternational Conference on New Developments and Appli-cations in Optical Radiometry(NEWRAD 2005), Davos, Switzerland, October 17–19, 2005, p. 223-224.

38. P. Kärhä, J. Hovila, P. Manninen, L. Seppälä, L. Ylianttila and E. Ikonen “De-terminationof reference planes of spectroradiometer diffusers”, in Abstracts of Presentations of 6thWorkshop on Ultraviolet Radiation Measurements, Davos, Switzerland, October 20–21,2005, p. 48.

39. A. Heikkilä, K. Hanhi, J. Kaurola, T. Koskela, J. Koskinen, P. Kärhä, A. Tanskanen, andT. Ture, “UVEMA: A new project exploring degrading effects of UV radiation onmaterials”, in Abstracts of Presentations of 6th Workshop on Ultraviolet RadiationMeasurements, Davos, Switzerland, October 20–21, 2005, p. 38.

40. J. Envall, L. Ylianttila, H. Moseley, A. Coleman, M. Durak, P. Kärhä, and E. Ikonen,“Investigation of Comparison methods for UVA irradiance responsivity calibrationfacilities”, in Abstracts of Presentations of 6th Workshop on Ultra-violet RadiationMeasurements, Davos, Switzerland, October 20–21, 2005, p. 4-5.

41. P. Kärhä, P. Manninen, J. Hovila, L. Ylianttila, and E. Ikonen, “Distance offset andangular responsivity measurements of UV spectroradiometer diffusers,” Annual meeting ofthe Nordic Ozone Group (NOG), Köpenhagen, April 27-28, 2006, in NOG 2006Abstracts (2006).

42. P. Kärhä and K. Ruokolainen, “Setup for studying the spectral behavior of ageing ofmaterials under intense UV radiation,” Annual meeting of the Nordic Ozone Group(NOG), Köpenhagen, April 27-28, 2006, in NOG 2006 Abstracts (2006).

43. E. Ikonen, P. Manninen, J. Hovila, and P. Kärhä, “Reference plane position and angularresponsivity of spectroradiometer diffusers,” Symposium digest, Simposio de Metrología2006, 5 pages (accepted).

44. A. Heikkilä, A. Tanskanen, A. Lindfors, P. Kärhä, and S. Syrjälä, “Quantification ofmaterial exposure to ultraviolet radiation,” In: Reichert T. (ed.) Natural and ArtificialAgeing of Polymers, 3rd European Weathering Symposium, 12th - 14th September 2007,Krakow, Poland. CEEES Publication No. 8 2007, pp. 461-470.

45. A. Heikkilä , J. Juhola, M. Kaunismaa, J. Hakkarainen, P. Kärhä, O. Meinander, T. Ture,S. Syrjälä, and J. Koskinen, “Outdoor weathering of glass fibre reinforced polyester andvinyl ester composites: preliminary results,” European Conference on CompositeMaterials, ECCM13 (submitted).

46. E. Ikonen, T. Poikonen, P. Kärhä, P. Manninen and F. Manoocheri, “Determination of f1’and its uncertainty with biased and random error models,” Proceedings of the CIE ExpertSymposium on Advances in Photometry and Colorimetry (Turin, Italy, 2008) pp. 55-60.

47. P. Kärhä, “Back to the basics: Distance dependence of radiometric measurements,”Proceedings of Newrad 2008 (Daejeon, Korea, Oct 13-16, 2008) pp. 253-254.

48. M. Ojanen, K. Anhalt, J. Hartmann, T. Weckström, P. Kärhä, M. Heinonen and E. Ikonen,“Comparison of the radiation temperature scales between PTB and MIKES,” Proceedingsof Newrad 2008 (Daejeon, Korea, Oct 13-16, 2008) pp. 285-286.




49. T. Widmaier, P. Kuosmanen, T. Salmela, P. Kärhä, and J. Juhanko, “Improved steel stripquality by 3D ground backup rolls,” Proceedings of 53rd InternationalesWissenschaftliches Kolloquium, Prospects in mechanical engineering, TechnischeUniversität Ilmenau, Sep. 2008, pp 229-230.

50. Anu Heikkilä, Johanna Juhola, Merja Kaunismaa, Jehki Hakkarainen, Outi Meinander,Outi Tolonen-Kivimäki, Uwe Feister, Stelios Kazadzis, Alkis Bais, José Manuel VilaplanaGuerrero, Carmen Guirado, Juanjo Rodríguez, Petri Kärhä, Timo Ture, Seppo Syrjälä,and Jarkko Koskinen, “Outdoor weathering of glass fibre reinforced polyester and vinylester composites: first results after one year exposure,” 13th European Conference onComposite Materials (ECCM13), 2-5 Jun 2008, Stockholm, Sweden.

51. Anu Heikkilä, Outi Meinander, Outi Tolonen-Kivimäki, Anders Lindfors, Jussi Kaurola,Tapani Koskela, Kaisa Lakkala, Annamaija Naula-Iltanen, Aleksi Sormanen, JohannaJuhola, Merja Kaunismaa, Uwe Feister, Natale Puglisi, Alessandro Dell’Acqua, JeanVerdebout, Jean-Philippe Putaud, Natalia Kouremeti, Stelios Kazadzis, Alkis Bais, JoséManuel Vilaplana Guerrero, Carmen Guirado, Juanjo Rodríguez, Petri Kärhä, Timo Ture,Seppo Syrjälä, and Jarkko Koskinen, “Towards life-time estimations for outdoorpolymeric materials in the changing climate” ESF/FMHS Entre-Sciences Conference"New methodologies and Interdisciplinary Approaches in Global Change Research", 5-10November 2008, IGeSA, Porquerolles, France.

52. E. Ikonen, T. Poikonen, P. Kärhä, and P. Manninen, “Determination of LED luminanceand radiance from effective intensity,” Proceedings of the CIE Light and LightingConference, Budapest, Hungary, May 27–29, 2009, pp. 174–175.

53. T. Poikonen, P. Kärhä, P. Manninen, and E. Ikonen, “A multifunctional setup formeasurement of LED luminous flux based on integrating sphere method,” Proceedings ofthe CIE Light and Lighting Conference, Budapest, Hungary, May 27–29, 2009, pp. 115–116.

54. P. Manninen, T. Koskela, L. Ylianttila, P. Kärhä, and E. Ikonen, “Imperfections in UVdiffusers: practical consequences,” 12th Biennial WMO-GAW Brewer Users GroupMeeting, Aosta, Italy, 20–26 September 2009.

55. A. Heikkilä, S. Kazadzis, O. Tolonen-Kivimäki, O. Meinander, A. Lindfors, K. Lakkala,T. Koskela, J. Kaurola, A. Sormanen, P. Kärhä, A. Naula-Iltanen, S. Syrjälä, M.Kaunismaa, J. Juhola, T. Ture, U. Feister, N. Kouremeti, A. Bais, J.M.Vilaplana, J.J.Rodriguez, C. Guirado, E. Cuevas, J. Koskinen, “Effects of terrestrial UV radiation onselected outdoor materials: an interdisciplinary approach.” Proc. SPIE 7462, 74620G(2009).

56. A. Heikkilä, P. Kärhä, K. Ruokolainen, J. Juhola, M. Kaunismaa, T. Ture, “A new facilityfor ageing materials with spectrally resolved UV radiation,” In: T. Reichert (Ed.) Naturaland Artificial Ageing of Polymers, 4th European Weathering Symposium 16th - 18th

September 2009, Budapest, Hungary. Gesellshaft für Umweltsimulation e.V. GUS,CEEES Publication No 11, 2009. (ISBN 978-3-9810472-8-8)

57. M. Shpak, P. Kärhä, M. Ojanen, E. Ikonen and M. Heinonen, “Optical temperaturemeasurement method for glowing microcomponents,” Joint International Symposium onTemperature, Humidity, Moisture and Thermal Measurements in Industry and Science -TEMPMEKO & ISHM 2010, Portorož, Slovenia, May 31 – Jun 4, 2010.




58. A. Heikkilä and P. Kärhä, “Evolving facility for studies on wavelength dependence ofplant response to UVB radiation,” In: Abstracts of the 1st Annual Meeting of COSTAction FA0906 UV4growth, Szeged, Hungary, February 6 – 9, 2011. (ISBN 978-963-508-606-1).

59. A. Heikkilä, A. Sormanen, A.-M. Naula-Iltanen, and P. Kärhä, “Investigating effects oftemperature on wavelength dependence of UV radiation induced damages,” In: Reichert T(editor): Natural and Artificial Ageing of Polymers, 5th European WeatheringSymposium, September 21 – 23, 2011, Lisbon, Portugal (CEEES Publication No 15,Gesellshaft für Umweltsimulation e.V. GUS, 2011). ISBN 978-3-9813136-2-8, pp. 67-75.

60. Petri Kärhä, Maija Ojanen, Saulius Nevas, and Erkki Ikonen, “Tungsten Filament Lampsas Absolute Radiometric Reference Sources,” in Proceedings of the Newrad 2011, Maui,Hawaii, September 18 – 23, 2011, pp. 94 – 95.

61. Petri Kärhä, Anu Heikkilä, and Merja Kaunismaa, “Measurement Setups and Methods forUV Action Spectra of Materials,” in Proceedings of the Newrad 2011, Maui, Hawaii,September 18 – 23, 2011, pp. 136 – 137.

62. Maksim Shpak, Lauri Sainiemi, Petri Kärhä, Martti Heinonen, Sami Franssila, and ErkkiIkonen, ”Refractive index of silicon with various doping levels at high temperatures,” inProceedings of the Newrad 2011, Maui, Hawaii, September 18 – 23, 2011, pp. 144 – 145.

63. Tuomas Poikonen, Tomi Pulli, Anna Vaskuri, Tuomo Hyvönen, Petri Kärhä, and ErkkiIkonen, ”Luminous Efficacy Measurement Setup for Solid State Lamps,” in Proceedingsof the Newrad 2011, Maui, Hawaii, September 18 – 23, 2011, pp. 225 – 226.

64. J. Gröbner, P. Blattner, M. Blumthaler, J. Dubard, L. Egli, O. El Gawhary, G. Hülsen, P.Kärhä, P. Meindl, J. Mes, C. Monte, S. Nevas, K. Nield, S. Nowy, M. Pisani, G.Porrovecchio, M. Rajteri, J. Schreder, M. Schuster, M. Šmíd, P. Sperfeld, A. Sperling, M.Wähmer, L. Werner, “Improving spectral solar UV traceability to SI,” in InternationalRadiation Symposium 2012, Berlin, Germany, 06 – 10 August 2012 (submitted).

65. A. Heikkilä, T. Koskela, K. Lakkala, P. Kärhä, S. Syrjälä, H. Lemmetyinen, U. Feister, N.Kouremeti, A. Bais, S. Kazadzis, J.M. Vilaplana, J.J. Rodriguez, C. Guirado, and E.Cuevas, “New approaches in assessment of solar UV exposure ageing materials,” inGeophysical Research Abstracts 14, EGU General Assembly 2012 (submitted).

66. Petri Kärhä, “Life time prediction of LED light sources” (Livstidbestämning av LED-källor), Temadag “LED - besvär?” Göteborg, Sweden, Februari 14, 2012.

67. Petri Kärhä, Anu Heikkilä, and Merja Kaunismaa, “Measurement Setups and Methods forUV Action Spectra of Materials,” in NOG, Annual Meeting of the Nordic Ozone and UVGroup, Helsinki, February 8 – 10, 2012.

68. Petri Kärhä and Julian Gröbner, “Improving spectral solar UV traceability to SI (EUEMRP project),” in NOG, Annual Meeting of the Nordic Ozone and UV Group, Helsinki,February 8 – 10, 2012.

69. M. Shpak, P. Kärhä, G. Porrovecchio, A. Sjöberg, M. Smid, and E. Ikonen, “A Twochannel photopic-scotopic luminance meter as a basis for mesopic photometry,” Abstractsof the CIE Lighting Quality & Energy Efficiency Conference, pp. 190–191, Hangzhou,China, 18–21 September 2012.




70. E. Ikonen, T. Poikonen, H. Baumgartner, P. Kärhä, T. Pulli, and A. Vaskuri,“Characterization of LED lamps for energy efficient lighting,” Abstracts of the CIELighting Quality & Energy Efficiency Conference, pp. 118–119, Hangzhou, China, 18–21 September 2012.

71. K. Lakkala, A. Arola, A. Heikkilä, J. M. Karhu, J. Kaurola, T. Koskela, E. Kyrö, P.Kärhä, A. V. Lindfors, O. Meinander, J. Gröbner, and G. Hülsen, “Two decades ofspectral UV measurements at Sodankylä,” International Radiation Symposium IRS2012,August 6 – 10, 2012, Berlin, Germany.

72. P. Kärhä, T. Pulli, P. Jaanson, J. Mes, J. Schreder, and F. Manoocheri, “Improveddiffusers for solar UV spectroradiometers,” International Radiation Symposium IRS2012,August 6 – 10, 2012, Berlin, Germany.

73. H. Baumgartner, A. Vaskuri, P. Kärhä, G. Andor, T. Poikonen, E. Ikonen, “Noncontactmethods for high power LED junction temperature measurement,” Abstracts of NorthernOptics 2012, Helsingør, Denmark, November 19–21, 2012. (Talk)

74. A. Heikkilä, P. Kärhä, M. Kaunismaa, and H. Lemmetyinen, “Accounting for time andintensity of exposure in deriving action spectra of photo-degradation,” In: Reichert T.(editor): Natural and Artificial Ageing of Polymers, 6th European WeatheringSymposium 11th – 13th September 2013, Bratislava, Slovak Republic. CEEES PublicationNo 16, Gesellshaft für Umweltsimulation e.V. GUS, 2013. ISBN 978-3-9813136-8-0, pp.85-92.

75. Anna Vaskuri, Petri Kärhä, Hans Baumgartner, Jani Oksanen, Lauri Riuttanen, GyorgyAndor, and Erkki Ikonen, “Radiometric determination of the junction temperature of light-emitting diodes,” Proc. CIE Centenary Conference „Towards a New Century of Light,“Paris, April 15 – 16, 2013, CIE x038:2013, pp. 308 – 316. (Talk)

76. Maksim Shpak, Petri Kärhä, Geiland Porrovecchio, Juha-Matti Hirvonen, Marek Smid,and Erkki Ikonen, ”Characterized photopic-scotopic luminance meter for measurements inthe mesopic range,” Proc. CIE Centenary Conference „Towards a New Century ofLight,“ Paris, April 15 – 16, 2013, CIE x038:2013, pp. 601 – 604.

77. G. Porrovecchio, M. Smid, M. Shpak, P. Kärhä, and E. Ikonen, “Low noise detectionsystem for mesopic and scotopic photometry,” Proc. CIE Centenary Conference„Towards a New Century of Light,“ Paris, April 15 – 16, 2013, CIE x038:2013, pp. 605 –606.

78. T. Poikonen, T. Pulli, P. Kärhä, and E. Ikonen, “Effect of rotation axis on the value ofphotometer directional response index f2,” Proc. CIE Centenary Conference “Towards aNew Century of Light,” Paris, April 15–16, 2013, pp. 607–610.

79. Kaisa Lakkala, Tapani Koskela, and Petri Kärhä, ”Irradiance scale of long term UVmeasurements at Sodankylä and Jokioinen, Finland,” Proceedings of Newrad 2014,Espoo, Finland, June 24 – 27, 2014, pp. 51 – 52.

80. Tomi Pulli, Petri Kärhä, Josef Schreder, Joop Mes, Allard Partosoebroto, and ErkkiIkonen, ”Realization of Improved Solar UV Diffusers,” Proceedings of Newrad 2014,Espoo, Finland, June 24 – 27, 2014, pp. 79 – 80.

81. Saulius Nevas, Peter Blattner, Omar El Gawhary, Tomi Pulli, Petri Kärhä, Luca Egli, andJulian Gröbner, “Characterisation of nonlinearities of array spectroradiometers in use for




measurements of the terrestrial solar UV irradiance,” Proceedings of Newrad 2014,Espoo, Finland, June 24 – 27, 2014, pp. 89 – 90.

82. Hans Baumgartner, Anna Vaskuri, Tuomas Poikonen, Timo Dönsberg, Tomi Pulli,Johannes Oksanen, Petri Kärhä, and Erkki Ikonen, ”Measurement of relative spectra ofLEDs,” Proceedings of Newrad 2014, Espoo, Finland, June 24 – 27, 2014, pp. 142 – 143.

83. T. Dönsberg, M. Sildoja, F. Manoocheri, T. Pulli, T. Poikonen, H. Baumgartner, P.Kärhä, and E. Ikonen, “New source and detector technology for the realization ofphotometric units,” Proceedings of Newrad 2014, Espoo, Finland, June 24 – 27, 2014, pp.144 – 146.

84. Petri Kärhä, Maksim Shpak, and Erkki Ikonen, ”Advantages of a two-channel luminancemeter for photopic and scotopic measurements in determining mesopic luminance,”Proceedings of Newrad 2014, Espoo, Finland, June 24 – 27, 2014, pp. 261 – 262.

85. Anna Vaskuri, Petri Kärhä, Ville Mylläri, Anu Heikkilä, and Erkki Ikonen, “High-Resolution Setup for Measuring Photoyellowing of Transparent Materials,” Proceedingsof Newrad 2014, Espoo, Finland, June 24 – 27, 2014, pp. 300 – 302.

86. Petri Kärhä, Hans Baumgartner, Anna Vaskuri, Dominique Renoux, and Erkki Ikonen,“Natural and Accelerated Ageing of Solid State Lamps,” Proceedings of Newrad 2014,Espoo, Finland, June 24 – 27, 2014, pp. 310 – 311.

87. Tuomas Poikonen, Teemu Koskinen, Hans Baumgartner, Petri Kärhä, and Erkki Ikonen,“Adjustable Power Line Impedance Emulator for Characterization of Energy-SavingLamps,” Proceedings of Newrad 2014, Espoo, Finland, June 24 – 27, 2014, pp. 348 –349.

88. L. Egli, S. Nevas, P. Blattner, O. ElGawhary, P. Kärhä, and J. Gröbner, “Characterizationof array spectroradiometers for solar UV measurements,” Proceedingsof CIE ExpertSymposium on Measurement Uncertainties in Photometry and Radiometry for Industry,CIE x040:2014, Vienna, Austria, September 12, 2014, pp. 22 – 27.

89. T. Poikonen, T. Pulli, T. Dönsberg, H. Baumgartner, A. Vaskuri, M. Sildoja, F.Manoocheri, P. Kärhä, and E. Ikonen, “Realization of photometric units without V(λ)filters and their dissemination to led lighting applications,” Proceedings of CIE ExpertSymposium on Measurement Uncertainties in Photometry and Radiometry for Industry,CIE x040:2014, Vienna, Austria, September 12, 2014, pp. 72 – 74.

90. T. Poikonen, T. Pulli, T. Dönsberg, H. Baumgartner, P. Kärhä, and E. Ikonen, “TowardsLED-based photometric standards,” Abstracts of the 28th CIE Session 2015, Manchester,UK, June 28 - July 4, 2015, p. 174.

91. E. Ikonen, T. Pulli, T. Dönsberg, T. Poikonen, F. Manoocheri, and P. Kärhä, “Accuratemeasurement of illuminance and luminous efficacy of white LED lamps,” Abstracts of the28th CIE Session 2015, Manchester, UK, June 28 - July 4, 2015, pp. 138-139.

92. H. Baumgartner, J. Oksanen, T. Poikonen, T. Pulli, P. Kärhä, and E. Ikonen, “Effects ofintelligent control on the lifetime of LED street lights, Abstracts of the 28th CIE Session2015, Manchester, UK, June 28 - July 4, 2015, p. 459.

93. A. Heikkilä, A. Vaskuri, and P. Kärhä, ”Photoyellowing of transparent materials asquantified with a setup of lasers,” In: Reichert T (editor): Natural and Artificial Ageing of




Polymers, 7th European Weathering Symposium, September 16-18, 2015, Naples, Italy.CEEES Publication No 17, Gesellshaft für Umweltsimulation e.V. GUS, 2015. ISBN 978-3-9816286-6-1, pp. 209-218.

94. Timo Dönsberg, Meelis Sildoja, Farshid Manoocheri, Tomi Pulli, Tuomas Poikonen, HansBaumgartner, Petri Kärhä, and Erkki Ikonen, “Methods for decreasing uncertainties inLED photometry,” CIM 2015 (submitted).

95. T. Poikonen, T. Pulli, T. Dönsberg, H. Baumgartner, P. Kärhä and E. Ikonen, “Review ofchallenges and disadvantages of possible LED-based photometric standards,” CIE 2016Australia (submitted).

96. E. Ikonen, N. Mikkonen, A. Vaskuri, H. Mäntynen and P. Kärhä, “Uncertainty evaluationof spectral integrals for LED lamps,” CIE 2016 Australia (submitted).

97. T. Pulli, A. Vaskuri, H. Mäntynen, P. Kärhä, and E. Ikonen, “Uncertainty Evaluation ofSpectral Integrals for LED Lamps,” Proceedings of CIE 2016 Lighting Quality andEnergy Efficiency Conference, 3 – 5 March 2016, Melbourne, Australia, CIE x042:2016,pp. 89-93 (2016).

98. Luca Egli, Julian Gröbner, Mario Blumthaler, Omar El Gawhary, Petri Kärhä, IngoKröger, Alberto Redondas, and Mark Weber, “Sensitivity analysis of ozone retrieval usingUV measurements and different retrieval methods,” International Radiation SymposiumIRS 2016, Auckland, New Zeeland, April 16 – 22, 2016, Paper 74.

99. Petri Kärhä, Anna Vaskuri, Nikke Mikkonen, Julian Gröbner, Luca Egli, and ErkkiIkonen, “Monte Carlo analysis of uncertainty of total atmospheric ozone derived frommeasured spectra,” International Radiation Symposium IRS 2016, Auckland, NewZeeland, April 16 – 22, 2016, Paper 327.

100. Anna Vaskuri, Petri Kärhä, Anu Heikkilä, and Erkki Ikonen, “UV Ageing Facility forDetermining Action Spectra of Photodegradation for Translucent Materials,” InternationalRadiation Symposium IRS 2016, Auckland, New Zeeland, April 16 – 22, 2016, Paper329.

101. K. Lakkala, A. Heikkilä, P. Kärhä, I. Ialongo, T. Karppinen, J. M. Karhu, A. V. Lindfors,and O. Meinander, “25 years of spectral UV measurements at Sodankylä, Finland,”International Radiation Symposium IRS 2016, Auckland, New Zeeland, April 16 – 22,2016, Paper 363.

102. A. Heikkilä, S. Kazadzis, O. Meinander, A. Vaskuri, P. Kärhä, V. Mylläri, S. Syrjälä, andT. Koskela, “UV exposure in artificial and natural weathering: a comparative study,”International Radiation Symposium IRS 2016, Auckland, New Zeeland, April 16 – 22,2016, Paper 383.

103. A. Heikkilä, K. Uusitalo, P. Kärhä, A. Vaskuri, J. Kaurola, K. Lakkala, and T. Koskela,“Quantifying exceptionality of UV indices in Jokioinen, Finland, over the years 1995-2015,” International Radiation Symposium IRS 2016, Auckland, New Zeeland, April 16 –22, 2016, Paper 385.




B3 Non-refereed national conference proceedings1. P. Kärhä, H. Salvén, F. Manoochehri, A. Lassila, and E. Ikonen, “Optical trap detector

and its use in realization of the SI unit candela,” Proceedings of the XXVII annualconference of the Finnish physical society, Järvenpää, March 17-19, 1994, paper 10:4.

2. H. Fagerlund, P. Kärhä, F. Manoochehri, A. Lassila, H. Ludvigsen, and E. Ikonen,“Detector-based luminous intensity measurements,” Proceedings of the XXIX annualconference of the Finnish physical society, Jyväskylä, March 16-18, 1995, paper 5:7.

3. T. Kübarsepp, P. Kärhä, and E. Ikonen, “A polarization-independent transmission trapdetector with predictable optical characteristics,” Proceedings of the XXXI annualconference of the Finnish physical society, Helsinki, March 13-15, 1996, paper 7:03.

4. P. Toivanen, H. Fagerlund, P. Kärhä, A. Lassila, F. Manoochehri, and E. Ikonen, “High-accuracy photometric measurements,” Proceedings of the XXX annual conference of theFinnish physical society, Otaniemi, March 21-23, 1997, paper 8:10.

5. P. Kärhä, P. Toivanen, F. Manoochehri, and E. Ikonen, “A detector-based spectralirradiance scale and its use in determining photometric and colorimetric quantities,”Proceedings of the XXXI annual conference of the Finnish physical society, Helsinki,March 13-15, 1997, paper 7:04.

6. P. Toivanen, P. Kärhä, and E. Ikonen, “Realization of the unit of luminance based on anintegrating sphere source,” Proceedings of the XXXII annual conference of the Finnishphysical society, Tampere, March 19-21, 1998, paper 4:7.

7. A. Haapalinna, T. Kübarsepp, P. Kärhä, and E. Ikonen, “Linearity measurements ofphotodetectors,” Proceedings of the Finnish Optics days 1998, Oulu, April 24-25, 1998,p. 4.

8. P. Kärhä, T. Blomqvist, A. Haapalinna, P. Toivanen, F. Manoochehri, and E. Ikonen, “Anovel filter radiometer for spectral irradiance and luminous intensity measurements,”Proceedings of the Finnish Optics days 1998, Oulu, April 24-25, 1998, p. 19.

9. P. Toivanen, A. Lassila, F. Manoochehri, P. Kärhä, and E. Ikonen, “A laser-based methodfor determination of irradiance responsivity of filter radiometers,” Proceedings of theXXXIII annual conference of the Finnish physical society, Turku, March 4-6, 1999, paper2.5.

10. T. Kübarsepp, P. Kärhä, and E. Ikonen, “Interpolation of the quantum yield of silicon inthe near UV,” Proceedings of the XXXIII annual conference of the Finnish physicalsociety, Turku, March 4-6, 1999, paper 2.19.

11. J. Hovila, P. Toivanen, P. Kärhä and E. Ikonen, “Characterization of a spectroradiometerused in the realization of the unit of spectral radiance,” in Proceedings of Finnish OpticsDay 1999, Joensuu 1999, p. 5.

12. J. Envall, P. Kärhä, and E. Ikonen, “Development of a national standard for fiber opticpower,” in Proceedings of Optics Days 2001, Physics Series Report 2-01, TampereUniversity of Technology, 2001, p. P3.

13. J. Envall, P. Kärhä and E. Ikonen, “Study of fiber optic power measurements usingphotodiodes with and without integrating sphere” Proceedings of the XXXVI Annual




Conference of the Finnish Physical Society, Selected Papers 7, Joensuu, Finland, 2002, p.74.

14. P. Kärhä, M. Noorma, T. Jankowski, T. Wecström and E. Ikonen “Radiometricdetermination of radiation temperatures”, Proceedings of Finnish Optics Days, FinnishOptics Days, Kajaani, Finland, 2002, p. 38.

15. M. Noorma, F. Manoocheri, P. Kärhä, V. Ahtee, A. Lamminpää, and E. Ikonen, “GaAsPtrap detector for UV measurements,” in Proceedings of Optics Days 2004, Turku, May 6-7, 2004, p. 17.

16. V. Ahtee, M. Noorma, P. Kärhä, and E. Ikonen, “Ageing of Au-GaAsP Schottkyphotodiodes under moderate ultraviolet radiation,” in Proceedings of Optics Days 2004,Turku, May 6-7, 2004, p. 20.

17. J. Envall, A. Andersson, J. Petersen, P. Kärhä, and E. Ikonen, “Calibration of fiber opticpower meters at high power levels,” in Proceedings of Optics Days 2004, Turku, May 6-7, 2004, p. 27.

18. J. Hovila, P. Kärhä, L. Mansner, and E. Ikonen, “Special application of photometry:Calibration of a photometer measuring maritime LED buoy lanterns,”in Proceedings of Optics Days 2004, Turku, May 6-7, 2004, p. 29.

19. P. Manninen, J. Hovila, P. Kärhä, and E. Ikonen, “Photometry of light emitting diodes,”Proceedings of the XXXIX Annual Conference of the Finnish Physical Society, Espoo,March 17-19, 2005, p. 375.

20. J. Envall, P. Kärhä, and E. Ikonen, “Calibration of broadband ultraviolet detectors bymeasurement of spectral irradiance responsivity,” Proceedings of the XXXIX AnnualConference of the Finnish Physical Society, Espoo, March 17-19, 2005, p. 387.

21. A. Lamminpää, M. Noorma, S. Nevas, F. Manoocheri, P. Kärhä, and E. Ikonen, “GaAsPphotodiodes and trap detector for high accuracy measurements in ultraviolet wavelengthregion,” Proceedings of the XXXIX Annual Conference of the Finnish Physical Society,Espoo, March 17-19, 2005, p. 388.

22. A. Lamminpää, M. Noorma, T. Hyyppä, F. Manoocheri, P. Kärhä, and E. Ikonen,“Characterization of germanium photodiodes and trap detector for near infraredwavelength region”, in Proceedings of Optics Days 2005, Jyväskylä, May 12-13, 2005, p.16.

23. M. Sildoja, T. Kübarsepp, M. Noorma, P. Kärhä, A. Lamminpää, S. Nevas, and E.Ikonen, “Polarization sensitivity of GaAsP photodetectors”, in Proceedings of OpticsDays 2005, Jyväskylä, May 12-13, 2005, p. 59.

24. P. Kärhä, K. Ruokolainen, and A. Heikkilä, “Facility for spectral ultraviolet aging ofmaterials,” in Proceedings of the 41st Annual Conference of the Finnish Physical Society,Tallinn, Estonia, March 15-18, 2007, p. 286.

25. T. Poikonen, P. Manninen, P. Kärhä and E. Ikonen, “Luminous flux measurement of lightemitting diodes,” the XLII Annual Conference of the Finnish Physical Society 2008,Turku, Finland, March 27-29, 2008.

26. T. Poikonen, P. Kärhä, P. Manninen, F. Manoocheri, and E. Ikonen, “Applicability ofrandom and biased error models in uncertainty evaluation of photometer quality factor




f1’,” Proceedings of the XLIII annual conference of the Finnish Physical Society, Espoo,Finland, March 12–14, 2009, p. 256.

27. M. Shpak, M. Ojanen, P. Kärhä, E. Ikonen, M. Heinonen and T. Weckström, “Opticaltemperature measurement of miniature silicon emitters,” Proceedings of the XLIII annualconference of the Finnish Physical Society, Espoo, Finland, March 12–14, 2009, p. 285.

28. T. Ture, M. Kaunismaa, A. Sormanen, K. Ruokolainen, P. Kärhä, A. Naula-Iltanen, J.Juhola, J. Hakkarainen, S. Syrjälä, O. Kivimäki-Tolonen, O. Mei-nander, J. Kaurola, T.Koskela, A. Lindfors, A. Tanskanen, A. Heikkilä, and J. Koskinen, ”Effects of UVradiation on materials,” Scientific Day 2009 of Tekes Functional Materials workshop,April 1, 2009, Espoo, Finland.

29. A. Heikkilä, S. Syrjälä, P. Kärhä, A. Sormanen, A. Naula-Iltanen, M. Kaunismaa, T. Ture,and J. Koskinen, “UVEMA2 - UV radiation effects on materials,” Tekes Annual Seminar“Driving innovation with nanotechnology and functional materials in Finland”, May 27-28,2009, Helsinki, Helsinki Fair Centre, Finland.

30. T. Hyvönen, M. Ojanen, P. Kärhä, and E. Ikonen, “Prospects in online opticalidentification of polymeric materials – future of recycling”, Optics Days, Tampere,Finland, May 6–7, 2010, p. 84.

31. M. Ojanen, P. Kärhä, and E. Ikonen, “Spectral irradiance model for tungsten halogenlamps in 340 – 850 nm wavelength range”, Optics Days, Tampere, Finland, May 6–7,2010, p. 39.

32. H. Baumgartner, D. Renoux, A. Vaskuri, T. Pulli, T. Poikonen, P. Kärhä, and E. Ikonen,“Lifetime projection of LED light sources,” in Proceedings of the Finnish Physics Days2013, Espoo, March 11 – 16, 2013, p. 10.18.

33. J.-M. Hirvonen, T. Poikonen, P. Kärhä, and Erkki Ikonen, “Spectrally Tunable RadianceSource based on LEDs,” in Proceedings of the Finnish Physics Days 2013, Espoo, March11 – 16, 2013, p. 10.20.

34. H. Baumgartner, D. Renoux, A. Vaskuri, T. Pulli, T. Poikonen, P. Kärhä, and E. Ikonen,“Lifetime projection of LED light sources,” in Proceedings of the Aalto Recearch Day2013, Espoo, September 26, 2013, p. 20.

35. Tomi Pulli, Petri Kärhä, Joop Mes, Josef Schreder, and Erkki Ikonen, ”ImprovedDiffusers for Solar UV Measurements,” in Proceedings of the Aalto Research Day 2013,Espoo, September 26, 2013, p. 75.

36. Petri Kärhä, Tomi Pulli, and Anna Vaskuri, ”UV-tutkimus Aalto-yliopistossa,” Kansallinenseminaari UV-säteilyn vaikutuksista, Ilma-tieteen laitos, Helsinki, 17.3.2016. (Talk)

C2 Edited books, conference proceedings or special issues of a journal1. P. Kärhä (Editor), UVNEWS 1, Newsletter of the thematic network for ultraviolet

measurements, ISSN 1456-2537, HUT, Espoo, September 1998, 32 p.

2. P. Kärhä (Editor), UVNEWS 2, Newsletter of the thematic network for ultravioletmeasurements, ISSN 1456-2537, HUT, Espoo, March 1999, 60 p.

3. P. Kärhä (Editor), UVNEWS 3, Newsletter of the thematic network for ultravioletmeasurements, ISSN 1456-2537, HUT, Espoo, July 1999, 28 p.




4. P. Kärhä (Editor), UVNEWS 4, Newsletter of the thematic network for ultravioletmeasurements, ISSN 1456-2537, HUT, Espoo, March 2000, 44 p.

5. P. Kärhä (Editor), UVNEWS 5, Newsletter of the thematic network for ultravioletmeasurements, ISSN 1456-2537, HUT, Espoo, October 2000, 28 p.

6. P. Kärhä (Editor), UVNEWS 6, Newsletter of the thematic network for ultravioletmeasurements, ISSN 1456-2537, HUT, Espoo, November 2000, 148 p.

7. P. Kärhä (Editor), UVNEWS 7, Newsletter of the thematic network for ultravioletmeasurements, ISSN 1456-2537, HUT, Espoo, December 2002, 44 p.

8. P. Kärhä (Editor), UVNEWS 8, Newsletter of the thematic network for ultravioletmeasurements, ISSN 1456-2537, TKK, Espoo, August 2006, 64 p.

9. P. Kärhä (Editor), UVNews 9, Newsletter of the thematic network for ultravioletmeasurements, ISSN 1456-2537, Aalto, Espoo, January 2013, 56 p.

10. P. Kärhä (Editor), UVNews 10, Newsletter of the thematic network for ultravioletmeasurements, ISSN 1456-2537, Aalto, Espoo, July 2014, 36 p.

11. Seongchong Park, Petri Kärhä, and Erkki Ikonen (Editors), Proceedings of Newrad 2014,Espoo, Finland, June 23 – 27, 2014, 368 p.

12. P. Kärhä (Editor), UVNews 11, Newsletter of the thematic network for ultravioletmeasurements, ISSN 1456-2537, Aalto, Espoo, March 2016, 52 p.

13. P. Kärhä (Editor), UVNews 12, Newsletter of the thematic network for ultravioletmeasurements, ISSN 1456-2537, Aalto, Espoo, March 2017, 52 p.

D4 Published development or research reports or studies1. Petri Kärhä, Anna Vaskuri, and Hans Baumgartner, Method for Predicting Life-Time from

SSL Spectrum, Project Report of EMRP ENG05 Metrology for Solid State Lighting, 3+97p. (2013).

2. P. Kärhä, J. Hollmen, S. Karling, J. Kujala, P. Kuosmanen ja Janne Lindqvist,Opinnäytetyön ohjaus Teknillisessä korkeakoulussa, Metrology Research Institute Report28/2005, 38 p.

D5 Textbooks, professional manuals or guides, dictionaries1. H. Fagerlund, M.-L. Junttila and P. Kärhä, Elektroninen mittaustekniikka; Laskut ja

Laboratoriotyöt, HUT, Espoo, 1995, 72 p. (in Finnish)

2. E. Häkkinen, K. Fallström, A. Haapalinna ja P. Kärhä, Häiriökysymykset - Häiriötmittauksissa, 4. korjattu painos, HUT, Espoo, 1999, 36 p. (in Finnish)

3. A. Pietiläinen, M. Merimaa, T. Niemi, P. Kärhä, and M. Ojanen, Mittaustekniikanperusteiden laboratoriotyöt, TKK, Espoo, 2007, 124 p. (in Finnish) (New edition in2008).

4. A. Pietiläinen, M. Merimaa, T. Niemi, P. Kärhä, and M. Ojanen, Mittaustekniikanperusteiden laboratoriotyöt, 16. korjattu painos, Espoo 2009, ISBN 951-22-6737-3, 118p. (in Finnish).




5. A. Pietiläinen, M. Merimaa, T. Niemi, P. Kärhä, M. Ojanen, and M. Shpak,Mittaustekniikan perusteiden laboratoriotyöt, 17. korjattu painos, Espoo 2010, ISBN978-952-60-3324-2, 125 p. (in Finnish).

6. A. Pietiläinen, M. Merimaa, T. Niemi, P. Kärhä, M. Ojanen, and M. Shpak,Mittaustekniikan perusteiden laboratoriotyöt, 18. korjattu painos, Espoo 2011, ISBN978-952-60-3324-2, 125 p. (in Finnish).

7. E. Hiltunen, L. Linko, S. Hemminki, M. Hägg, E. Järvenpää, P. Saarinen, S. Simonen, andP. Kärhä, Laadukkaan mittaamisen perusteet, MIKES julkaisu J4/2011, Metrologianneuvottelukunta ja Mittatekniikan keskus MIKES, Espoo 2011, ISBN 978-952-5610-75-8, 134 p. (in Finnish).

G Theses1. P. Kärhä, Calibration of photodetectors in the ultraviolet region, Diploma work, HUT,

Espoo, 1993, 52 p. (in Finnish)

2. P. Kärhä, Detector-based scales for spectral responsivity and spectral irradiance,Lisentiate thesis, HUT, Espoo, 1995, 80 p.

3. P. Kärhä, Trap detectors and their applications in the realisation of spectral responsivity,luminous intensity and spectral irradiance scales, Thesis for the degree of Doctor ofTechnology, HUT, Espoo, 1997, 92 p.

curriculum vitae date: 7/4/2017 - aalto · • training for technical assessor of accredited...

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