Modeling the pulse shape of Q-switched lasers to account for terminal-level relaxation

被引：0
|
作者：
曾钦勇 [1 ,2 ]
万勇 [1 ,2 ]
熊吉川 [2 ]
朱大勇 [1 ]
机构：
[1] School of Optoelectronic Information,University of Electronic Science and Technology of China
[2] Southwest Institute of Technical Physics
来源：
Chinese Physics B | 2011年 / 20卷 / 03期
关键词：
solid state laser; passive Q-switch; Cr 4+:YAG absorber;
D O I：
暂无
中图分类号：
TN24 [激光技术、微波激射技术];
学科分类号：
0803 ; 080401 ; 080901 ;
摘要：
To account for the effect of lower-level relaxation,we have derived a characteristic equation for describing the laser pulse from the modified rate equations for Q-switched lasers.The pulse temporal profile is related to the ratio of the lower-level lifetime to the cavity lifetime and the number of times the population inversion density is above the threshold.By solving the coupled rate equations numerically,the effect of terminal-level lifetime on pulse temporal behaviour is analysed.The mode is applied to the case of a diode-pumped Nd:YAG laser that is passively Q-switched by a Cr 4+:YAG absorber.Theoretical results show good agreement with the experiments.
引用
收藏
页码：237 / 242
页数：6
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