中国光学, 2019, 12 (1): 167, 网络出版: 2019-03-06
基于SESAM被动调Q的激光二极管泵浦Yb∶CaYAlO4脉冲激光器
Output characteristics of diode-pumped passively Q-switched Yb∶CaYAlO4 pulsed laser based on a SESAM
Yb∶CaYAlO4晶体 被动调Q 半导体可饱和吸收镜 激光二极管 Yb∶CaYAlO4 crystal passive Q-switched semiconductor saturable absorber mirror laser diode
摘要
采用发射波长约为976 nm的半导体激光器作为泵浦源, Yb3+掺杂浓度为15at.%、通光长度为2 mm的Yb∶CaYAlO4晶体作为增益介质, 本文提出了一种基于半导体可饱和吸收镜(SESAM)被动调Q的激光二极管泵浦Yb∶CaYAlO4以获取稳定脉冲输出的方案。通过合理设计谐振腔, 实现了稳定的被动调Q激光脉冲输出, 并分析了泵浦功率的大小对输出脉冲的重复频率、脉冲宽度、单脉冲能量以及脉冲峰值功率的影响。
Abstract
By utilizing a fiber-coupled laser diode emitting at a wavelength of around 976 nm as a pump source and a Yb∶CaYAlO4 crystal with a Yb3+ ion doping concentration of 15at.% and a thickness of 2 mm as the gain medium, a scheme of laser diode-pumped Yb∶CaYAlO4 for passively Q-switched pulsed lasers using a semiconductor saturable absorber mirror(SESAM) is proposed. By reasonably designing the resonant cavity, a stable passively Q-switched pulsed output is achieved. Furthermore, the influence of the pump power on the pulse repetition rate, pulse width, single pulse energy and peak power are analyzed.
唐睿, 高子叶, 吴正茂, 夏光琼. 基于SESAM被动调Q的激光二极管泵浦Yb∶CaYAlO4脉冲激光器[J]. 中国光学, 2019, 12(1): 167. TANG Rui, GAO Zi-ye, WU Zheng-mao, XIA Guang-qiong. Output characteristics of diode-pumped passively Q-switched Yb∶CaYAlO4 pulsed laser based on a SESAM[J]. Chinese Optics, 2019, 12(1): 167.