ZnGeP2 crystal:: applications for visualization or IR signals

被引：6

作者：

Andreev, Y ^{[1
]}

Geiko, P ^{[1
]}

Kotsubinskaya, E ^{[1
]}

机构：

[1] Russian Acad Sci, SB, Inst Opt Monitoring, Tomsk 634055, Russia

来源：

TENTH JOINT INTERNATIONAL SYMPOSIUM ON ATMOSPHERIC AND OCEAN OPTICS/ATMOSPHERIC PHYSICS, PT 2: LASER SENSING AND ATMOSPHERIC PHYSICS | 2004年 / 5397卷

关键词：

differential absorption lidar; detection; CO2; laser; up-conversion; ZnGeP2;

D O I：

10.1117/12.548593

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Up-conversion of long, 3-50-mus, pulses imitating input signals of CO2 laser differential absorption lidars was investigated experimentally. Efficiency of 1 to 2% has been achieved when using 1.06-mum Nd:YAG pump emission and 3.9 mm ZnGeP2 crystal that is characterized by absorption coefficient equal to 2.0 cm(-1) at this wavelength and 2.5 cm(-1) at up-converted 0.9548 mum one. When using a silicon avalanche photodiode operating in photon counting mode operation, 450 times increase in signal-to-noise ratio can be realized in comparison with direct detection of the CO2 laser lidar signals by MCT photodiode.

引用

页码：173 / 180

页数：8

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