er902 - docs.tuyap.online

www.megawattlasers.com 2014-09-24 +1 843 342 7221

Standard Specifications Parameter Nominal Value Wavelength: 1.535 µm Pulse Energy: 200 µJ nominal Pulse Width: Approx. 4 ns (TBD) Build up time: ~2.0mS typical Peak Power: 50 kW Repetition Rate: Single Shot to 10 Hz Operational Temperature: -40 to 65° C Beam Quality: TEM000, Near Diffraction Limited Divergence: ~7 mRad Power Requirement: ≤6 Amp Pulse, 2V Standby Power not required

For more information contact: [email protected]

ER902 MINIATURE SOLID-STATE LASER

Diode-Pumped, Passively Q-Switched, Er:Glass Laser Packaged

Application Specific Lasers

www.megawattlasers.com 2014-09-24 +1 843 342 7221

Beam Propagation, ER902

d4σ Divergence =~7mRad

78 mm from Output Coupler d4σ*X=0.679mm d4σ*Y=0.587mm




www.megawattlasers.com 20190111 +1 843 342 7221

MegaWatt Lasers

Inc. 30 Watt 2.94 m SOLID-STATE RESONATOR

Compact, Room-Temperature Water-Cooled, Flashlamp-Pumped Er:YAG Resonator Assembly

MegaWatt Lasers is pleased to offer off-the-shelf laser resonator assemblies. These resonators are intended for

OEM’s or R&D applications. Resonator assemblies include pump chamber, flashlamp, laser rod, trigger

electronics, and resonator optics tailored for the specific application. This resonator assembly is perfectly suited

as a laboratory laser which can easily transform into an OEM design. Also available are resonator assemblies

using other solid-state laser media, such as CTH:YAG, Er:Glass, Nd:YAG, Nd: Glass, Ruby, and Alexandrite.

MegaWatt Lasers also offers custom resonators with higher average powers 40 W (2.09 m) and 200 W @ (1.06

m) as well as turnkey systems. Our Engineering department has considerable experience assisting OEM

customers with custom as well as complete system designs.

Table of Standard Specifications for R4X100C2-ER resonator

Parameter Value Unit Notes

Wavelength 2.94 µm

Resonator Output 30 W 10 – 30 Hz

Lamp Voltage Nominal: 380 – 700 V Typical range

Pulse Width Nominal: 100 – 500 µs 350 µs Typical

Coolant Temp 25 °C Deionized or Distilled H2O,

Free from organic contamination

Coolant Flow Rate 8 – 10 Liters/min 2 Gallons/min

Coolant Resistivity 0.2 – 1 MΩ∙cm Coolant Conductivity: 1 – 5 µS/cm

Pressure Drop 200 – 240 kPa Return pressure should be < 35 kPa

Repetition Rate 5 – 30 Hz Typical range

Recommended Pump Parameters Limits

Energy ≤ 100 Joules Pump energy is manually measured or the flash

lamp driver has internal circuitry to measure.

Power ≤ 1300 Watts Pump Energy * Repetition Rate

Peak Power ≤ 265 kW Pump Energy / Pulse Width

Resonators

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MegaWatt Lasers

Inc.

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Pump Power [W]

Output Power Vs. Pump PowerEr:YAG 4X100, 350 µs, 82%R OC

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Pump Energy [J]

Output Energy Vs. Pump EnergyEr:YAG 4X100, 350 µs, 82%R OC




MegaWatt Lasers

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Repetition Rate [Hz]

Output Energy Vs. Repetition RateEr:YAG 4X100, 350 µs, 82%R OC

29.6J_480V42.4J_540V64.8J_620V92.8J_700V

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Repetition Rate [Hz]

Output Power Vs. Repetition RateEr:YAG 4X100, 350 µs, 82%R OC

29.6J_480V

42.4J_540V

64.8J_620V

92.8J_700V



MegaWatt Lasers

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Flashlamp Voltage [V]

Output Energy Vs. Flashlamp VoltageEr:YAG 4X100, 350 µs, 82%R OC


1.9

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Coolant Temperature [°C]

Output Energy Vs. Coolant TemperatureEr:YAG 4X100, 350 µs, 10 Hz, 82%R OC, 8 l/min



MegaWatt Lasers

Inc.

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Divergence Vs. Output PowerEr:YAG 4X100, 350 µs, 10 Hz, 82%R OC

10Hz15Hz20Hz25Hz30Hz

700V

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700V

700V 670V 640V 620V

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Pulse Width [µs]

Recommended LimitsOutput Energy Vs. Pulse WidthEr:YAG 4X100, 10 Hz, 82%R OC

NOTE: The voltages next to the data points are the highest recommended operating voltage for a given pulse width. For a pulse width setting between 100 – 350 µs, the resonator is limitedby peak power and should not be operated over 700 V. The resonator will not achieve 30 W below 350 µs. Between 350 -500 µs,the resonator is limited by average power. At 400 µs, the voltage should not exceed 670V and so on. Exceeding the recommended limits will cause optical damage to the resonator components, which is not covered by MWL’s warranty.



MegaWatt Lasers

Inc. Recommended Cooling Specifications and Requirements:

MegaWatt Lasers, Inc. recommends the use of a minimum of 1 kW cooling, at minimum of 8 liters/min (~2

gal/min). Careful selection of wetted cooling system components is very important for long pump chamber

life. The pump chamber requires clean deionized water as a coolant. The resistivity should be about 1

MΩ⋅cm (conductivity ~ 1 S/cm) and should be free of organic contamination. High quality stainless steel,

such as 316-L is acceptable, but parts should be passivated. Aluminum must be anodized with a high

quality process, such as MIL-A-8625F, Type II, Class 1. Titanium is also acceptable and Grade 2

(unalloyed, standard oxygen) has been used successfully. Copper and copper alloys, such as brass, should

be avoided. Many plastics, including polypropylene, polyethylene, Teflon, Delrin, Noryl, etc. have been

used successfully, but it is important that these materials do not leach plasticizers into the coolant. Wetted

materials that are rated for milk transport are often good candidates for cooling system components. When

considering cooling components, it is important to ensure the components do not introduce contamination

into the coolant. This is different from the components being “compatible with distilled or deionized

water.” Ordinary Steam Distilled Water, available from grocery stores usually has a resistivity of 0. 6- 1.2

MΩ⋅cm and this is acceptable coolant if laboratory distilled or deionized water is not available. If all

wetted components are inert, it is generally not necessary to use a deionization filter in the cooling system.

If a deionization filter is used, ensure it does not introduce organic contamination into the coolant. The UV

from the flashlamp will sterilize biological organisms in the coolant. If the system will not be operated for

more than a month, the cooling system should be drained and dried using filtered compressed air or Ultra

High Purity (UHP) nitrogen. For a system that is used weekly, the coolant should be changed every six

months. Wetted components in the pump chamber include anodized 6061-T6 aluminum, passivated SS

316-L, silicate glass or fused silica, and silicone O-rings.

Flashlamp Driver Recommendations:

For most applications, typical operational parameters are up to 30 Watts of average power at 10 Hz with an

electrical pulse duration of 350 microseconds. Using an M184 flashlamp, the capacitor bank voltage is

approximately 680 volts. Usually a relatively large capacitor bank (~ 3000uF) is used and the flashlamp

current is switched with an IGBT. The resulting current pulse is roughly “square” in shape. A good

laboratory driver would be MegaWatt’s KALD-20-10.

Resonator Table of replacement components:

Table of Standard replacement components for R4X100C2-ER

Part # Description Notes

4X100C2 4X100 Pump Chamber with bottom cooling ports B525-B

C760 Er:YAG laser rod, 4X102 mm Plano AR coated ends

M184 Flashlamp Usually In-Stock

C764 HR mirror, ½ x ¼ in thick Usually In-Stock

C765 PR mirror, R=82.5%, ½ x ¼ in thick Also available 73%

Resonators



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Inc.

Mechanical Interface



MegaWatt Lasers

Inc.

United States

MegaWatt Lasers, Inc.

P.O. Box 24190

Hilton Head Island, SC

29925-4190

+1 843-342-7221 Phone

+1 843-342-7223 Fax

[email protected]

http://www.megawattlasers.com

Japan

New Metals and Chemicals Corporation, Inc.

Kyobashi TD Building

No. 2-5, 1-chome, Kyobashi

Chuo-ku, Tokyo, Japan

104-0031

81 (3) 3201-8600 Phone

81 (3) 3271-5860 Fax

[email protected]

http://www.newmetals.co.jp

Israel

IL Photonics BSD Ltd.

Moshe Bril, General Manager

511 Hashita

Beit Shemesh 99552, Israel

+972-2-9923532 Phone

+972-2-9921480 Fax

[email protected]

http://www.ILPhotonics.com

China

林翔 (Sharon Lin)

销售代表, Sales Representative

Fuzhou, China

Tel: +86 136 0081 0883

+86 (591) 8756 1137

WeChat: 1002550988

[email protected]

S. Korea

L2K (Laser Leader of Korea) Co.

Jae-Pil Jeon

530-ho, 187, Techno-2ro,

Yuseong-gu, Daejeon 305-500 Korea

Phone: +82-42-934-7744

+972-2-9921480 Fax

[email protected] or [email protected]

http://www.l2k.kr

Europe

MegaWatt Lasers, Inc.

P.O. Box 24190

Hilton Head Island, SC

29925-4190

+1 843-342-7221 Phone

+1 843-342-7223 Fax

[email protected]

http://www.megawattlasers.com

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