LD抽运的Nd∶YVO_4激光器的被动调Q运转  

Passively Q-switched Operation of Nd∶YVO_4 Laser Pumped by Laser Diode

作　　者：吴丽双[1] 王加贤[2] 

机构地区：[1]泉州师范学院理工学院,福建泉州362000 [2]华侨大学信息科学与工程学院,福建泉州362021

出　　处：《激光与红外》2007年第3期223-226,共4页Laser & Infrared

基　　金：福建省自然科学基金;国务院侨办科研基金资助

摘　　要：采用Cr4+∶YAG晶体作为可饱和吸收体,实现激光二极管(LD)端面抽运的Nd∶YVO4激光器的被动调Q运转。当12.8W的LD连续抽运时,获得平均功率1.28W、重复频率40kHz、脉冲时间宽度24ns、峰值功率达1.33kW的稳定脉冲序列;当LD单次脉冲抽运时,在34mJ的抽运能量下,获得能量为0.48mJ、脉宽34ns的调Q脉冲。实验上研究了抽运功率或能量、输出镜透过率对Nd∶YVO4激光器输出的影响,并给出了合理的理论解释。Passively Q-switched operation of a laser diode end-pumped Nd：YVO4 laser was realized by using Cr^4＋ ：YAG as saturable absorber. When LD continuous pumped, the pulse train with average output power of 1.28W, repetition rate of 40 kHz, pulse width of 24 ns, and peak power of 1.33 kW was obtained with the absorbed pump power of 12.8W. When LD pumped with single pulse, a Q-switch laser pulse with 0.48 mJ energy and 34 ns pulse duration was obtained. The dependence of the Nd：YVO4 laser output on pump power or pump energy and the trans-mission of output mirror was experimentally carried out. The experiment results were analyzed and discussed.

关 键 词：LD抽运 ND:YVO4激光器 CR^4+:YAG晶体 被动调Q 

分 类 号：TN248.1[电子电信—物理电子学]