中国激光, 2013, 40 (3): 0302010, 网络出版: 2013-02-01
21 W、56 MHz Nd∶YVO4皮秒脉冲激光放大器 下载: 843次
Research on 21 W and 56 MHz NdYVO4 Picosecond Pulse Laser
激光器 皮秒脉冲 锁模 皮秒激光器 平顶脉冲 电光开关 lasers picosecond pulse mode-locked picosecond laser flat-top pulse electro-optical switch
摘要
报道了通过激光二极管(LD)单端抽运Nd∶YVO4晶体的三级功率放大系统,获得稳定的平均功率21 W以上的1064 nm皮秒激光输出。当重复频率为56 MHz、平均功率为4 W的皮秒种子脉冲注入时,经过三级功率放大,最高功率达26 W,光光转换效率达25%。皮秒单脉冲宽度为17 ps,连续1 h内的功率不稳定性小于2%,光束质量M2为1.5。采用RbTiOPO4(RTP)电光开关作为打标开关,实现主从脉冲比达2101以上,可以满足打标机的需要。
Abstract
Three power amplifier system is reported in which the Nd∶YVO4 crystal is pumped by laser diode (LD), in which 1064 nm picosecond laser output average power is more than 21 W. When the repetition frequency of 56 MHz, the average power of 3 W picosecond seed pulse is injected, a maximum power of 26 W is got by a three-stage power amplifier system with the optical conversion efficiency of 25%. The picosecond pulse duration is less than 17 ps, power instability in 1 h is less than 2%, and the light beam quality M2 is less than 1.5. A RbTiOPO4 (RTP) electro-optical switch is as a marking switch and the main-minor pulse ratio is up to 2101, which is suitable for the use of the marking machine.
麻云凤, 余锦, 牛岗, 张晶, 赵天卓, 闫莹, 张雪, 樊仲维. 21 W、56 MHz Nd∶YVO4皮秒脉冲激光放大器[J]. 中国激光, 2013, 40(3): 0302010. Ma Yunfeng, Yu Jin, Niu Gang, Zhang Jing, Zhao Tianzhuo, Yan Ying, Zhang Xue, Fan Zhongwei. Research on 21 W and 56 MHz NdYVO4 Picosecond Pulse Laser[J]. Chinese Journal of Lasers, 2013, 40(3): 0302010.