包层抽运调Q光纤激光器的实验研究  

Experimental Study of Cladding Pumped Q-switched Fiber Laser

作　　者：吕福云[1] 樊亚仙[1] 王宏杰[1] 胡姝玲[1] 戴武涛[1] 徐之光[1] 吕可诚[1] 董孝义[1] 

机构地区：[1]南开大学物理科学学院光电信息科学系,天津300071

出　　处：《中国激光》2003年第12期1057-1060,共4页Chinese Journal of Lasers

基　　金：国家自然科学基金 (No .6 99770 12 );国家自然科学基金重点项目 (No .6 0 1370 10 )资助课题

摘　　要：报道了几种不同结构的包层抽运调Q光纤激光器。用大功率多模 976nmLD抽运D形内包层掺Yb3 + 光纤 ,对激光器的自调Q ,声光主动调Q ,主被动混合调Q运转状态进行了一系列实验研究。观测分析了调Q光纤激光器的三种阈值情况 ,对它们的输出脉冲特性进行了详细的实验研究。得到了纳秒量级 ,峰值功率～ 2 0 0kW ,重复频率为千赫兹的稳定脉冲序列。An experimental study of Yb-doped double-clad fiber laser in various optical configurations operating in self-Q-switched, acousto optic modulator (AOM) Q-switched, and hybrid Q-switched conditions is presented. The fiber with a D-shaped inner cladding is pumped by a multi-mode laser diode with high power at 976 nm. Three thresholds of the Q-switched fiber laser are observed and analyzed. And the characteristics of the output pulses are studied experimentally in detail. Pulses with duration of ns, peak power of about 200 kW and the repetition rate of kHz are obtained. The results of the experiment are explained qualitatively.

关 键 词：激光技术 调Q 双包层光纤 受激布里渊散射(SBS) 

分 类 号：TN248.1[电子电信—物理电子学]