求购激光管
<P>请问哪里可以买到这样的激光管</P><P>Laser wave length: 632.8 nm
Output power: 7 mW
Polarization: linear polarized500 : 1
Beam waist: 0.76 - 0.84 mm (1/e2)
Beam divergence: approx. 0.96 mrad
Longitudinal mode spacing: 438 Mhz nominal
Warm up time: 15 min (90 % power level)
Output power stability: 2.5 % / 8 h long time drift
Operating voltage: 2350 ± 200V
Operating current: 6.5 mA
Operating temperature: +15°C to +50°C
Storage temperature: -40°C to +80°C
Relative humidity: 0 to 90 %
Weight: approx. 700 g
Life time: 20000 h</P> <P>你可以联系北京大学物理系010-62751753</P> <P>好的，谢谢你了。</P>
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