中国激光, 2018, 45 (9): 0901003, 网络出版: 2018-09-08
主动调Q内腔式Nd∶YAG/m-LaVO4拉曼激光器 下载: 788次
Actively Q-Switched Intracavity Nd∶YAG/m-LaVO4 Raman Laser
激光器 拉曼激光器 主动调Q激光器 m-LaVO4晶体 全固态激光器 lasers Raman lasers actively Q-switched lasers m-LaVO4 crystal solid-state lasers
摘要
实验研究了具有单斜独居石结构的钒酸镧(m-LaVO4)晶体的室温拉曼光谱, 报道了基于 m-LaVO4晶体作为拉曼增益介质的主动调Q内腔式脉冲拉曼激光器。受激拉曼变频实验以波长为808 nm的光纤耦合半导体激光器(LD)作为抽运激发光源, Nd∶YAG晶体为产生基频激光的增益介质, 融石英声光调Q器为主动调Q元件, 采用紧凑的法布里-珀罗两镜平凹谐振腔可有效地产生波长为1170.9 nm的一阶斯托克斯脉冲激光。当注入抽运功率为6.51 W, 脉冲重复频率为30 kHz时, 实验产生的一阶斯托克斯脉冲激光的最高平均功率为767 mW, 相应的脉冲宽度为13.8 ns, 单脉冲能量为25.6 μJ, 峰值功率为1.85 kW。
Abstract
We investigate the room-temperature Raman spectrum of monoclinic monazite-type LaVO4 (m-LaVO4) crystal and report a diode end-pumped intracavity actively Q-switched m-LaVO4 Raman laser. In this experiment, a fiber-coupled diode laser (LD) with a wavelength of 808 nm is used as a pumping excitation source, a Nd∶YAG crystal is used as a gain medium for generating a fundamental-frequency laser, and a quartz-acoustic-acoustic Q-switch is used as an active Q-switched component. A compact Fabry-Perot cavity composed by two Fabry-Perot mirrors produces a first-order Stokes pulsed laser with a wavelength of 1170.9 nm. When the input pump power is 6.51 W and the pulse repetition frequency is 30 kHz, the experiment produces the first-order Stokes laser with a maximum average power of 767 mW, the corresponding pulse width of 13.8 ns, the single pulse energy of 25.6 μJ and the peak power of 1.85 kW.
白如雪, 林海枫, 张莉珍, 陈玮冬, 林州斌, 张戈. 主动调Q内腔式Nd∶YAG/m-LaVO4拉曼激光器[J]. 中国激光, 2018, 45(9): 0901003. Bai Ruxue, Lin Haifeng, Zhang Lizhen, Chen Weidong, Lin Zhoubin, Zhang Ge. Actively Q-Switched Intracavity Nd∶YAG/m-LaVO4 Raman Laser[J]. Chinese Journal of Lasers, 2018, 45(9): 0901003.