Efficient continuous-wave frequency doubling of a tunable CO2 laser in AgGaSe2

被引：50

作者：

Tochitsky, SY ^{[1
]}

Petukhov, VO ^{[1
]}

Gorobets, VA ^{[1
]}

Churakov, VV ^{[1
]}

Jakimovich, VN ^{[1
]}

机构：

[1] BYELARUSSIAN ACAD SCI, INST SOLID STATE PHYS & SEMICOND, MINSK 220072, BELARUS

来源：

APPLIED OPTICS | 1997年 / 36卷 / 09期

关键词：

second-harmonic generation; cw CO2 laser; nonlinear crystals; damage threshold;

D O I：

10.1364/AO.36.001882

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Second-harmonic output at 4.6-5.5 mu m of the order of 6 mW with a 0.12% external conversion efficiency has been obtained by pumping a AgGaSe2 crystal with a low-power cw CO2 laser. The surface damage threshold of AgGaSe2 for cw radiation was found to be inside the limit of 33-45 kW/cm(2) in the 9.2-10.8-mu m wavelength region. Another important limitation of the pump power connected with a thermal lensing effect in crystal was determined experimentally. A comparison was made of AgGaSe2 and ZnGeP2 crystals as materials suitable for the efficient generation of the second harmonic of cw CO2 laser radiation. (C) 1997 Optical Society of America.

引用

页码：1882 / 1888

页数：7

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