基于声光和Cr4+:YAG饱和吸收体的双损耗调制调Q和锁模激光器的数值模拟

Numerical simulation of dual-loss-modulated Q-switched and mode-locked laser with an acousto-optic and Cr4+:YAG saturable absorber.

作者信息

Zhao Shengzhi, Li Guiqiu, Li Dechun, Yang Kejian, Li Yufei, Li Ming, Li Tao, Zhang Gang, Cheng Kang

机构信息

School of Information Science and Engineering, Shandong University, Jinan 250100, China.

出版信息

Appl Opt. 2010 Apr 1;49(10):1802-8. doi: 10.1364/AO.49.001802.

DOI:10.1364/AO.49.001802

PMID:20357862

Abstract

By considering the influence of the turn-off time and the modulation frequency of the acousto-optic (AO) modulator as well as the Gaussian spatial distribution of the photon density, we give a developed rate equation model for a diode-pumped dual-loss-modulated Q-switched and mode-locked (QML) Nd:GdVO(4) laser with AO modulator and Cr(4+):YAG saturable absorber. With this developed model, the dual-loss-modulated QML laser characteristics, such as pulse width and pulse energy, can be numerically simulated, and the theoretical evaluations are in good agreement with the experimental results.

摘要

通过考虑声光（AO）调制器的关断时间和调制频率的影响以及光子密度的高斯空间分布，我们给出了一个用于带有AO调制器和Cr(4+):YAG饱和吸收体的二极管泵浦双损耗调制调Q锁模（QML）Nd:GdVO(4)激光器的改进速率方程模型。利用这个改进模型，可以对双损耗调制QML激光器的特性，如脉冲宽度和脉冲能量进行数值模拟，理论评估结果与实验结果吻合良好。