光学学报, 2016, 36 (1): 0114002, 网络出版: 2015-12-31
中红外2.8 μm 光纤激光器机械调Q 工作特性 
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Output Characteristics of Q-Switched Mid-Infrared Fiber Laser with a Mechanical Chopper
激光器 调Q 斩波器 中红外 光纤激光器 掺铒氟化物光纤 lasers Q-switched mechanical chopper mid-infrared fiber lasers Er∶ZBLAN
摘要
采用中心波长为975 nm 半导体激光器(LD)抽运高掺铒氟化物双包层光纤Er∶ZBLAN，并在谐振腔内插入机械斩波器，获得了2.8 μm 激光机械调Q 输出。研究了激光器在不同抽运功率，不同工作频率条件下的输出特性，分析了脉冲分裂的原因。通过控制适当抽运功率，激光器工作在3.5 kHz 条件下，获得了最大单脉冲能量84.5 μJ，脉宽250.3 ns，峰值功率超过300 W 的脉冲输出。
Abstract
A high power actively Q-switched mid-infrared fiber laser at 2.8-μm waveband is demonstrated by employing a 975 nm laser- diode pumping a piece of heavily Er3 +- doped ZBLAN doubleclad fiber and a mechanical chopper into the cavity as the Q- switch. Output characteristics at different pump powers and various repetition rates is investigated. Meanwhile, the pulse spikes are observed and analyzed. The maximum pulse energy of 84.5 μJ, pulse duration of 250.3 ns and peak power of exceeding 300 W is obtained at a repetition rate of 3.5 kHz under a proper pump power.
沈炎龙, 周松青, 谌鸿伟, 黄珂, 栾昆鹏, 陶蒙蒙, 于力, 易爱平, 冯国斌. 中红外2.8 μm 光纤激光器机械调Q 工作特性[J]. 光学学报, 2016, 36(1): 0114002. Shen Yanlong, Zhou Songqing, Chen Hongwei, Huang Ke, Luan Kunpeng, Tao Mengmeng, Yu Li, Yi Aiping, Feng Guobin. Output Characteristics of Q-Switched Mid-Infrared Fiber Laser with a Mechanical Chopper[J]. Acta Optica Sinica, 2016, 36(1): 0114002.
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