eem calculations in fred mikkel brydegaard applied molecular spectroscopy & remote sensing...
TRANSCRIPT
![Page 1: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/1.jpg)
EEM calculations in FRED
Mikkel BrydegaardApplied Molecular Spectroscopy & Remote Sensing
Atomic Physics, LTH
![Page 2: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/2.jpg)
Project
![Page 3: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/3.jpg)
Components
• Fiber tip source
• Off axis parabolic mirror
• Quartz prism
• Achromat
• Sample window
• Chassis
![Page 4: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/4.jpg)
Source
• Ocean Optics ø230 μm circular fiber tip
• 24° acceptance angle
• Apperture to 6° for collimating mirror
• Simulated spectral content: 300, 350, 400, 500 and 900 nm
![Page 5: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/5.jpg)
Collimating mirror
• Newport. Off-Axis Replicated Parabolic Mirror, 1.500 in. Dia, 4.000 in. EFL, Protected Aluminum Coating
![Page 6: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/6.jpg)
Prism
• Esco products
• Equilatheral fused silica
• 40mm sides
• 35° mean dispersion 300-900nm
• 40*cos(30+35/2)=27mm apperture
• Displacement of optical axis from center of circumcicle of prism 8.93 mm
![Page 7: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/7.jpg)
Achromat
• Edmund optics
• Uncoated triplet
• CaF2 Fused Silica CaF2
• Provided raytracing object from edmund upon signed request
![Page 8: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/8.jpg)
Sample slit
• Quartz microscope cover slide
• Mirror coating
• Nano church
![Page 9: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/9.jpg)
Chassis
• Imported from Alibre design
• Anodized aluminum
• Black lambertian 4%
• Contribution
![Page 10: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/10.jpg)
Setup
Fiber tip
Newportv Off-axis paraboloid
EscoQuartzprismQuartz
window
Edmund achromatCaF2-QS
![Page 11: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/11.jpg)
Properties of interest
• Throughput
• Spectral resolution
• Signal to background
Simulation variables
• Ray numbers
• Allow reflections
• Allow surface scatters
![Page 12: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/12.jpg)
Resulting rays
End rays C1 C2 C3
R1 175 3855 24710
R2 2405 66122 430448
R3 14560 418750 2693084
![Page 13: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/13.jpg)
Simulation time
Calculation time C1 C2 C3
R1 0.933 sec 5.94 secs 31.2 secs
R2 6.25 secs 50.2 secs 8.76 mins
R3 35.6 secs 5.23 mins 54.2 mins
![Page 14: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/14.jpg)
Throughput
Throughput C1 C2 C3
R1 56,62% 56,85% 56,85%
R2 60,95% 61,23% 61,23%
R3 61,55% 61,85% 61,85%
![Page 15: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/15.jpg)
FWHM
FWHM mm C1 C2 C3
R1 0.115 0.147 0.147
R2 0.146 0.146 0.146
R3 0.136 0.136 0.136
FWHM nm C1 C2 C3
R1 14.30 18.33 18.33
R2 18.14 18.14 18.14
R3 16.91 16.93 16.93
![Page 16: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/16.jpg)
Added background
Background C1 C2 C3
R1 0,00E+00 4,70E-03 2,16E-04
R2 0,00E+00 1,40E-03 1,65E-05
R3 0,00E+00 9,09E-04 2,73E-06
![Page 17: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/17.jpg)
Signal and back ground contributions
3.5E0 1E-3
3E-6
![Page 18: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/18.jpg)
Spatial profile of background contributions
![Page 19: EEM calculations in FRED Mikkel Brydegaard Applied Molecular Spectroscopy & Remote Sensing Atomic Physics, LTH](https://reader035.vdocuments.site/reader035/viewer/2022081417/56649f175503460f94c2eb81/html5/thumbnails/19.jpg)
Experiences
• Prism displacement
• Ommitment of achromat, in accordance with ”Spectrograph design fundamentals / J.F. James.”
• More stray light along slit than perpendicular to it
• Parabolic mirrors in FRED