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

作　　者：李尧[1] 朱辰[1] 王雄飞[1] 林佶翔[1] 赵鸿[1] 

机构地区：[1]固体激光技术国家级重点实验室,北京100015

出　　处：《中国激光》2009年第2期281-284,共4页Chinese Journal of Lasers

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20μm和80μm),对注入功率为2W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162kW,光束质量M2=4.3。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 um and 80 um . 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 M^2 value is 4.3.

关 键 词：激光器 光纤激光器 高重复频率 窄脉宽 主振荡-功率放大 

分 类 号：TN248.1[电子电信—物理电子学]