Rate equations and solutions of a laser-diode end-pumped passively Q-switched intracavity doubling laser by taking into account intracavity laser spatial distribution

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• 作者：Li ; Guiqiu ; Zhao ; Shengzhi ; Zhao ; Hongming ; Yang ; Kejian ; Ding ; Shuanghong
• 关键词：42.55.xi ; 42.60.Gd ; Rate equations ; Numerical solutions ; Gaussian spatial distribution ; Intracavity-frequency-doubling ; Passively Q-switched ; LD-pumped
• 刊名：Optics Communications
• 出版年：2004
• 期刊代码：50_00304018
• 类别：ph
• 出版时间：April 15, 2004
• 卷：234
• 期：1-6
• 页码：321-328
• 文件大小：220 K

摘要

The intracavity photon density and the initial population-inversion density are assumed to be Gaussian spatial distributions in the rate equations of a laser-diode end-pumped passively Q-switched intracavity-frequency-doubling Nd:YVO₄/KTP laser with Cr⁴⁺:YAG saturable absorber. These space-dependent rate equations are solved numerically. In the experiment, a laser-diode end-pumped passively Q-switched Nd:YVO₄/KTP laser with Cr⁴⁺:YAG saturable absorber is realized. The dependences of pulse width, pulse repetition rate, single-pulse energy and peak power on incident pump power are measured for the generated-green-light pulses, and the experimental results are consistent with the numerical solutions.