Sum-frequency generation of Q-switched CO laser radiation in BaGa2GeSe6 and GaSe nonlinear crystals

被引：0

作者：

Dmitriy V. Badikov

Valeriy V. Badikov

Andrey A. Ionin

Igor O. Kinyaevskiy

Yury M. Klimachev

Andrey A. Kotkov

Konstantin V. Mitin

Daria V. Mokrousova

Vera A. Mojaeva

机构：

[1] P.N. Lebedev Physical Institute of Russian Academy of Science,

[2] Kuban State University,undefined

[3] Shvabe—Research,undefined

[4] Moscow State University of Geodesy and Cartography,undefined

来源：

Optical and Quantum Electronics | 2018年 / 50卷

关键词：

Sum-frequency generation; Multiline CO laser; Nonlinear crystals; Nonlinear coefficient;

D O I：

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中图分类号：

学科分类号：

摘要：

Sum-frequency generation of multiline Q-switched CO laser radiation is studied in the BaGa2GeSe6 (BGGSe) crystal and in the GaSe crystal. The maximal external conversion efficiency obtained in the BGGSe crystal is 0.7%, which corresponded to the internal conversion efficiency of 1% taking into account optical losses under reflection from uncoated facets of the crystal. The maximum external conversion efficiency in the GaSe crystal is 0.15% with internal efficiency 0.31%. Effective nonlinearity of BGGSe crystal is determined through the ratio between measured efficiency in BGGSe and GaSe crystals. Effective nonlinearity for sum-frequency generation of the CO laser emission in the BGGSe crystal is deff = 42 ± 14 pm/V, and nonlinear coefficient of this crystal is d11 = 49 ± 15 pm/V.

引用

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