CO laser frequency mixing in nonlinear crystals ZnGeP2 and GaSe

ZHANG Lai-ming; XIE Ji-jiang; GUO Jin; CHEN Fei; JIANG Ke; ANDREEV YU M; IONIN A A; KINYAEV

doi:10.3788/OPE.20122002.0277

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CO laser frequency mixing in nonlinear crystals ZnGeP₂ and GaSe

Article | 更新时间：2020-08-12

- CO laser frequency mixing in nonlinear crystals ZnGeP₂ and GaSe
- Optics and Precision Engineering Vol. 20, Issue 2, Pages: 277-286(2012)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所激光与物质相互作用国家重点实验室,吉林长春,130033
  2. 俄罗斯科学院西伯利亚分院气候与生态系统监测研究所托木斯克,俄罗斯,634055
  3. 俄罗斯科学院列别捷夫物理所莫斯科,俄罗斯,119991
- 作者简介：
- 基金信息：
  
  Laboratory Foundation No.SKLIM090301 CIOMP and Presidium SB RAS under 30.3.2 Project
- DOI：10.3788/OPE.20122002.0277
  CLC： O734.1;TN241
- Received：20 March 2011，
  
  Revised：15 September 2011，
  
  Published Online：25 February 2012，
  
  Published：25 February 2012
- 稿件说明：
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张来明, 谢冀江, 郭劲, 陈飞, 姜可, ANDREEV YU M, IONIN A A, KINYAEVSKIY I O, KLIMACHEV YU M, KOZLOV A YU, KOTKOV A A, LANSKII G V, SHAIDUKO A V. CO激光在非线性晶体ZnGeP2和 GaSe中的混频效应[J]. 光学精密工程, 2012,20(2): 277-286

ZHANG Lai-ming, XIE Ji-jiang, GUO Jin, CHEN Fei, JIANG Ke, ANDREEV YU M, IONIN A A, KINYAEVSKIY I O, KLIMACHEV YU M, KOZLOV A YU, KOTKOV A A, LANSKII G V, SHAIDUKO A V. CO laser frequency mixing in nonlinear crystals ZnGeP2 and GaSe[J]. Editorial Office of Optics and Precision Engineering, 2012,20(2): 277-286
张来明, 谢冀江, 郭劲, 陈飞, 姜可, ANDREEV YU M, IONIN A A, KINYAEVSKIY I O, KLIMACHEV YU M, KOZLOV A YU, KOTKOV A A, LANSKII G V, SHAIDUKO A V. CO激光在非线性晶体ZnGeP2和 GaSe中的混频效应[J]. 光学精密工程, 2012,20(2): 277-286 DOI： 10.3788/OPE.20122002.0277.

ZHANG Lai-ming, XIE Ji-jiang, GUO Jin, CHEN Fei, JIANG Ke, ANDREEV YU M, IONIN A A, KINYAEVSKIY I O, KLIMACHEV YU M, KOZLOV A YU, KOTKOV A A, LANSKII G V, SHAIDUKO A V. CO laser frequency mixing in nonlinear crystals ZnGeP2 and GaSe[J]. Editorial Office of Optics and Precision Engineering, 2012,20(2): 277-286 DOI： 10.3788/OPE.20122002.0277.

摘要

为了获得2.15~1 500 m的相干光源

研究了CO激光在高质量非线性晶体ZnGeP

和GaSe中的混频效应。为了提高转换效率

在激光锁模方式下对CO激光器的二次谐波、和频和差频的产生进行了研究。结果显示

利用GaSe晶体和ZnGeP

晶体

调

多谱线CO激光辐射的谱线内倍频效率分别大于0.3%和1.1%。采用ZnGeP

晶体进行倍频时

可调谐锁膜CO激光器的转换效率为12.5%。模拟结果显示

二次谐波与和频产生的输出光谱相同。相邻谱线下

和频和差频的产生过程中

基波和一次谐波可以分别在4.0~5.0 m和100~1 200 m (太赫兹范围)形成振荡。利用锁模CO激光器在ZnGeP

晶体中的混频效应

可以得到2.15~1 500 m的相干光源

同时转换效率可达到甚至高于12.5%。

Abstract

The CO laser frequency mixing in high-quality ZnGeP

and GaSe crystals is studied to obtain the 2.15-1 500 m coherent sources. Secondary Harmonic Generation(SHG)

sum- and difference frequency generations are considered as a method for the CO laser frequency mixing and the mode-locking as an efficient way to improve the mixing efficiency.Results show that the internal SHG efficiency of

-switched multiline CO laser radiation has exceeded by 0.3% for GaSe crystal and has reached by 1.1 % for ZnGeP

crystal. When the SHG is in ZnGeP

the internal efficiency of electron beam sustained discharge frequency-tunable mode-locking CO laser is up to 12.5 %. Simultaneous SHG and sum frequency generation show the same output spectrum. It is shown by modeling that the sum and difference frequency generations of neighboring lines of both fundamental and first overtone bands can allow one to get the oscillation

respectively

at 4.0-5.0 m and 100-1 200 m (THz). In conclusions

the frequency mixing of mode-locked CO laser emission lines in ZnGeP

crystals allows some one to design 2.15-1 500 m coherent sources with the power frequency conversion efficiency up to or over 12.5%.

关键词

Keywords

references

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