标题：Optimization of passively Q-switched and mode-locked laser with Cr~(4+):YAG saturable absorber
作者：Jia Zhao;Shengzhi Zhao;Kang Li;Fanmin Kong;Gang Zhang
作者机构：[Zhao, J] School of Information Science and Engineering, Shandong University, Jinan 250100, China;[ Zhao, S] School of Information Science and Enginee 更多
通讯作者地址：[Zhao, SZ]Shandong Univ, Sch Informat Sci & Engn, Jinan 250100, Peoples R China.
来源：Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter
关键词：Optimization;Gaussian spatial distribution;Cr~(4+):YAG saturable absorber;QML laser;Rate equation and solutions
摘要：By considering the Gaussian spatial distributions of the intracavity photon density and the initial population-inversion density, the coupled rate equations for a diode-pumped passively Q-switched and mode-locked (QML) laser with Cr~(4+):YAG saturable absorber are given. These coupled rate equations are solved numerically and the key parameters of an optimally coupled passively QML laser are determined for the first time. These key parameters include the parameters of the gain medium, the saturable absorber and the resonator, which can maximize the pulse energy of singly Q-switched envelope. The optimal calculations for a diode-pumped passively QML Nd:GdVO_(4) laser with Cr~(4+):YAG saturable absorber are presented to demonstrate the numerical simulation applicable.