Experiments of second harmonic generation of 9.3 μm pulsed CO2 lasers

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Experiments of second harmonic generation of 9.3 μm pulsed CO2 lasers

Article | 更新时间：2020-08-12

- Experiments of second harmonic generation of 9.3 μm pulsed CO2 lasers
- Optics and Precision Engineering Vol. 17, Issue 11, Pages: 2684-2691(2009)
- 作者机构：
  
  中国科学院长春光学精密机械研究所长春,130022
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：18 May 2009，
  
  Revised：07 September 2009，
  
  Published Online：25 November 2009，
  
  Published：25 November 2009
- 稿件说明：
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李殿军. 9.3微米脉冲激光激光倍频实验[J]. 光学精密工程, 2009,17(11):2684-2691

Experiments of second harmonic generation of 9.3 μm pulsed CO2 lasers[J]. Optics and precision engineering, 2009, 17(11): 2684-2691.
李殿军. 9.3微米脉冲激光激光倍频实验[J]. 光学精密工程, 2009,17(11):2684-2691 DOI：

Experiments of second harmonic generation of 9.3 μm pulsed CO2 lasers[J]. Optics and precision engineering, 2009, 17(11): 2684-2691. DOI：

摘要

本文介绍了利用9.3m脉冲TEACO2激光通过AgGaSe2晶体二次谐波产生（SHG）技术实现4.65m中红外波段激光输出的实验研究。根据非线性光学技术原理和倍频技术的基本要求，通过有针对性的技术手段对于TEACO2激光器实现输出谱线选择和脉冲波形时间分布整形控制，使之尽量满足激光倍频试验对于泵浦的脉冲光源在波长和输出时间分布上的基本要求，并以此作为基波光源进行了产生二次谐波的试验研究工作。实验结果显示，即使是相同的AgGaSe2倍频晶体材料，由于生产厂商的不同具有完全不同的表面破坏阈值行为，而相同点是体损伤阈值均大于表面损伤阈值。实验上获得倍频输出最大能量12.9mJ；倍频输出最高平均功率940mW。

Abstract

Experiments results of mid-infrared 4.65m radiation with second harmonic generation (SHG) in AgGaSe2 crystals from a 9.3m pulsed TEACO2 laser are introduced. Based on the principles of nonlinear optics and laser frequency doubling

the pulsed TEA CO2 laser was improved for its output beam quality which made it the whole way to meet the basic requirements of pumping laser source in frequency doubling experiment and then took this laser source as fundamental wave to perform the research works for the SHG. Results show that the same AgGaSe2 crystals made by the different manufacturers displays the different surface damaged characteristics

but the resemblance to them is bulk damaged threshold values higter than surface one. The frequency-doubled maximal single pulse energy 12.9 mJ and average power 940 mW were obtained.

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