La2CaB10O19晶体高效紫外激光输出研究

王丽荣; 张国春; 冯景程; 白磊; 刘丽娟; 王晓洋

doi:10.3788/fgxb20204102.0140

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La₂CaB₁₀O₁₉晶体高效紫外激光输出研究

材料合成及性能 | 更新时间：2020-08-12

- La₂CaB₁₀O₁₉晶体高效紫外激光输出研究
- Highly Efficient UV Laser Output of La₂CaB₁₀O₁₉ Crystal
- 发光学报 2020年41卷第2期页码：140-145
- 作者机构：
  
  1. 中国科学院理化技术研究所北京人工晶体研究与发展中心北京,100190
  2. 中国科学院大学, 北京 100049
- 作者简介：
- 基金信息：
  
  国家自然科学基金（51890864，51972314）资助项目()
- DOI：10.3788/fgxb20204102.0140
  中图分类号： TP394.1;TH691.9
- 纸质出版日期：2020-2-5，
  
  网络出版日期：2019-12-18，
  
  收稿日期：2019-11-25，
  
  修回日期：2019-12-13，
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王丽荣, 张国春, 冯景程等. La2CaB10O19晶体高效紫外激光输出研究[J]. 发光学报, 2020,41(2): 140-145

WANG Li-rong, ZHANG Guo-chun, FENG Jing-cheng etc. Highly Efficient UV Laser Output of La2CaB10O19 Crystal[J]. Chinese Journal of Luminescence, 2020,41(2): 140-145
王丽荣, 张国春, 冯景程等. La2CaB10O19晶体高效紫外激光输出研究[J]. 发光学报, 2020,41(2): 140-145 DOI： 10.3788/fgxb20204102.0140.

WANG Li-rong, ZHANG Guo-chun, FENG Jing-cheng etc. Highly Efficient UV Laser Output of La2CaB10O19 Crystal[J]. Chinese Journal of Luminescence, 2020,41(2): 140-145 DOI： 10.3788/fgxb20204102.0140.

摘要

CaB

（LCB）为可通过Nd:YAG激光三倍频产生355 nm紫外激光的非线性光学晶体，其光学性能可与商用化的LiB

（LBO）晶体媲美，但抗潮解特性优势明显。本文对用LCB晶体实现355 nm紫外激光输出的三倍频产生过程进行了优化设计，利用走离补偿方法来提高激光输出转换效率。通过在光路中加入沿

=45方向切割、厚度为1.2 mm的方解石晶体走离补偿片，在脉冲宽度为60 ns、重复频率10 kHz的激光参数下实现355 nm输出功率由12 W提升至20 W；在脉冲宽度为25 ps、重复频率为10 Hz的激光参数下355 nm转换效率由28.3%提升至35.2%。

Abstract

CaB

(LCB) is a nonlinear crystal which can produce 355 nm ultraviolet (UV) laser output through the third harmonic generation (THG) of Nd:YAG laser

its optical property is comparable to that of commercial LiB

(LBO) crystal

with an obvious advantage in its moisture resistance. In this paper

the THG process of 355 nm UV laser output with LCB crystal was optimized

and the walk-off compensating method was used to improve the conversion efficiency of laser output. By adding a calcite crystal compensator cut at

=45 to the optical axis with a thickness of 1.2 mm

the output power of 355 nm can be increased from 12 W to 20 W under the laser parameters of 60 ns pulse width and 10 kHz repetition rate. When the pulse width is 25 ps and the repetition rate is 10 Hz

the conversion efficiency from 1 064 nm to 355 nm is improved from 28.3% to 35.2%.

关键词

LCB非线性光学晶体紫外激光三倍频走离补偿

Keywords

LCBnon-linear optical crystalultraviolet laserthird-harmonic generationwalk-off compensation

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