摘要
研究了一种对薄片激光晶体进行端面离焦泵浦的涡旋光激光器。泵浦光经过会聚透镜聚焦,当焦点处于薄片Nd∶YAG中时,激光器输出基模。通过移动会聚透镜改变泵浦光焦点,当泵浦光焦点移出薄片Nd∶YAG时,产生1阶涡旋光,微调输出镜倾斜角度可以改变涡旋光的手性。实验产生了0.57 W的LG0,±1模连续涡旋光以及0.48 W的LG0,-1模脉冲涡旋光。脉冲涡旋光的重复频率为10 kHz,脉冲宽度为35.2 ns,单脉冲能量为0.048 mJ,峰值功率为1.37 kW。这种方案无需对泵浦光和谐振腔进行特殊设计,具有结构简单紧凑的优点。
A thin disk vortex laser end-pumped out-of-focus is presented.When the focus of the convergent pump beam is located in the thin Nd∶YAG disk,the laser operates in the fundamental mode.While the focus is moved out of the thin disk,the laser generates a vortex beam with an order of 1,and the handedness can be changed by finely tuning the tilt angle of the output mirror.A continuous wave output power of 0.57 W and a Q-switched pulse output power of 0.48 W,with the repetition rate of 10 kHz,pulse width of 35.2 ns,single pulse energy of 0.048 mJ,and peak power of 1.37 kW is experimentally demonstrated.This scheme of vortex laser is free of specially designed pump beams and laser resonators,and thus is compact in structure.
作者
连天虹
朱家华
刘健宁
焦明星
Lian Tianhong;Zhu Jiahua;Liu Jianning;Jiao Mingxing(School of Mechanical and Precision Instrument Engineering,Xi’an University of Technology,Xi’an 710048,Shaanxi,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2023年第15期239-243,共5页
Laser & Optoelectronics Progress
基金
国家自然科学基金(61805196,51875455,62075180)。
关键词
激光器
固体激光器
离焦泵浦
涡旋光
调Q
lasers
solid-state laser
end-pumped out-of-focus
vortex light
Q-switched
