声光调Q光纤激光器输出脉冲多峰现象的实验研究  

Experimental Research on Multi-Peak Phenomenon of Acousto-Optic Q-Switched Fiber Laser Output Pulse

作　　者：郝海洋[1] 李莉[1] 杨亚婷[1] 方妍[1] 王海燕[1] 胡贵军[1] 

机构地区：[1]吉林大学通信工程学院,吉林长春130012

出　　处：《中国激光》2016年第6期26-31,共6页Chinese Journal of Lasers

基　　金：国家自然科学基金(61575078);吉林省科技发展计划(20140203009GX);吉林省发改委产业技术研究专项(2014Y087)

摘　　要：搭建了声光调Q脉冲光纤激光器实验系统,研究了输出的调Q脉冲多峰现象。通过调节系统的抽运功率、声光Q开关的重复频率、开启时间、上升时间等可调参数进行实验,寻找多峰个数少、形状好的调Q脉冲。最终在抽运功率为8 W,Q开关重复频率为10kHz,开启时间为260ns,上升时间为150ns时,得到一个前沿有稍微突起的调Q脉冲输出,此时激光转换效率约为23.6%。实验成功地减少了输出脉冲波形多峰的个数,优化了调Q脉冲的输出波形。对实验结果进行的分析为声光调Q光纤激光器获取输出平滑脉冲提供了方法。An acousto-optic Q-switched fiber laser experimental system has been established,and the multi-peak phenomenon of the output Q-switched pulse has been analyzed.In order to find the Q-switched pulse with less multipeak number and better shape,we adjust the controllable parameters like the pump power of system,the repetition rate of acousto-optic Q-switch,opening time and rise time.At last,when the pump power is 8 W,repetition frequency of Q-switch is 10 kHz,opening time is 260 ns,and rise time is 150 ns,we have got a Q-switched output pulse with a slightly protuberance in the front,the conversion rate of laser is about 23.6% at the moment.The multi-peak number of output pulse is reduced successfully in the experiment,and the output waveform of Q-switched pulse is optimized.The analysis of the experiment result provides methods for outputting smooth pulse of acoustooptic Q-switched fiber laser.

关 键 词：激光器 光纤激光器 声光调Q 多峰 优化 

分 类 号：TN248[电子电信—物理电子学]