摘要
研究了晶体材料、腔长、抽运功率等对调Q脉冲宽度的影响,研制了一台基于Nd:YVO4晶体的高效率、结构紧凑的双波长激光器。该激光系统采用主振荡功率放大(MOPA)结构,振荡级产生重复频率为5kHz、脉冲能量为400μJ、脉冲宽度为1.1ns的1064nm基横模激光,通过878.6nm零线抽运的Nd:YVO4级联放大器,脉冲能量和脉冲宽度变为2.72mJ和1.03ns;通过三硼酸锂(LBO)晶体腔外倍频,获得了脉冲能量为1.54mJ,倍频效率大于56%,激光脉冲宽度小于910ps,峰值功率为1.7 MW的532nm绿光激光输出。
The effect of crystal material,cavity length,pump power and other parameters on the width of Qswitched pulse is investigated,and a compact dual-wavelength laser with high efficiency based on Nd：YVO4 crystal is developed.Master oscillator power amplifier（MOPA）structure is used in the laser system.A transverse fundamental mode of 1064 nm pulse with repetition frequency of 5 kHz,pulse energy of 400μJ and pulse width of1.1 ns is generated in the oscillator.Through the 878.6 nm zero-line pumped cascade amplifier,pulse energy and pulse duration turn to 2.72 mJ and 1.03 ns,respectively.A 532 nm green laser pulse with energy of 1.54 mJ,second harmonic generation efficiency larger than 56%,pulse duration shorter than 910 ps and peak power of1.7 MW is obtained through the external frequency doubling by lithium triborate（LBO）crystal.
作者
陆俊
丁建永
贺岩
于广礼
杨彬
姚红权
周军
Lu Jun;Ding Jianyong;He Yan;Yu Guangli;Yang Bin;Yao Hongquan;Zhou Jun(Nanjing Institute of Advanced Laser Technology,Nanjing,Jiangsu 210000,China;Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2018年第8期27-33,共7页
Laser & Optoelectronics Progress
基金
国家重大科学仪器设备开发专项(2013YQ120343)
关键词
激光器
亚纳秒
电光调Q
激光放大器
双波长
lasers
sub-nanosecond
electro-optics Q-switch
laser amplifier
dual-wavelength
