Effect of buffer gas on gas temperature distribution and output characteristics of flowing-gas circulation cesium vapor laser

被引：0
|
作者：
Wan H. [1 ,2 ]
He Y. [1 ]
Ji Y. [1 ,2 ]
Chen F. [1 ]
机构：
[1] State Key Laboratory of Laser Interaction with Matter, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun
[2] University of Chinese Academy of Sciences, Beijing
来源：
Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering | 2022年 / 51卷 / 10期
关键词：
DPAL; flowing-gas circulation; high power laser;
D O I：
10.3788/IRLA20211105
中图分类号：
TN2 [光电子技术、激光技术];
学科分类号：
0803 ; 080401 ; 080901 ;
摘要：
To study the effect of buffer gas on the three-dimensional gas temperature distribution and output performance of flowing-gas circulation diode-pumped alkali vapor laser (DPAL), the beam propagation equation is introduced into the theoretical model of flowing-gas circulation DPAL in this paper. The effects of the composition and pressure of the buffer gas on the output performance of the end-pumped transverse flow cesium vapor laser are simulated and analyzed. The three-dimensional distribution of work temperature and output power are obtained. The results show that when using pure alkanes as buffer gas, the temperature in the vapor cell corresponding to ethane is lower than methane with same pressure, and the laser output power is higher. When the mixture of alkane gas and inert gas is used as a buffer gas, if the pressure of alkane is low, adding an appropriate amount of He or Ar can reduce the temperature in the vapor cell and increase the laser output power. © 2022 Chinese Society of Astronautics. All rights reserved.
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