中国激光, 2009, 36 (2): 281, 网络出版: 2009-02-23
百瓦级高重复频率窄脉宽光纤激光器实验研究
Experimental Study on Hundred-Watt Output Power High Repetition Rate Narrow Pulse Duration Fiber Lasers
激光器 光纤激光器 高重复频率 窄脉宽 主振荡-功率放大 lasers fiber laser high repetition rates narrow pulse duration master-oscillator power amplifier
摘要
报道了一种基于主振荡-功率放大( MOPA)方式工作的脉冲光纤激光器。为了获得高重复频率、高峰值功率、高光束质量的激光输出,以自行研制的小型激光二极管(LD)抽运声光Q开关Nd∶GdVO4固体激光器作为种子源,采用两级掺Yb双包层光纤串联结构(光纤纤芯直径分别为20 μm和80 μm),对注入功率为2 W的种子激光信号进行放大。最终获得了平均功率103 W的脉冲激光输出,重复频率50 kHz,脉冲宽度12.7 ns,峰值功率达162 kW,光束质量M2=4.3。
Abstract
A pulsed fiber laser based on master-oscillator power amplifier(MOPA) architecture is reported. In order to get a high repetition rate, high peak power,and high beam quality laser, a laser diode(LD) pumped acoustic-optic Q-switched Nd∶GdVO4 solid-state laser is used as a seed source. The seed laser with output power of 2 W is amplified by Yb-doped double-cladding fibers in two stages whose core diameters are 20 μm and 80 μm. At repetition rate of 50 kHz, average output power of 103 W is generated. The highest peak power is up to 162 kW, pulse duration is 12.7 ns,and M2 value is 4.3.
李尧, 朱辰, 王雄飞, 林佶翔, 赵鸿. 百瓦级高重复频率窄脉宽光纤激光器实验研究[J]. 中国激光, 2009, 36(2): 281. Li Yao, Zhu Chen, Wang Xiongfei, Lin Jixiang, Zhao Hong. Experimental Study on Hundred-Watt Output Power High Repetition Rate Narrow Pulse Duration Fiber Lasers[J]. Chinese Journal of Lasers, 2009, 36(2): 281.