主动调Q掺铥双包层光纤激光器  

Actively Q-switched thulium-doped double-clad fiber laser

作　　者：杜戈果[1] 张灵聪[1] 赵俊清[1] 闫培光[1] 郭春雨[1] 

机构地区：[1]深圳市激光工程重点实验室先进光学精密制造技术广东普通高校重点实验室深圳大学电子科学与技术学院,深圳518060

出　　处：《深圳大学学报（理工版）》2012年第5期417-420,共4页Journal of Shenzhen University(Science and Engineering)

基　　金：国家自然科学基金资助项目(61007054);深圳市科技研发基础研究计划资助项目(1104300029783024)~~

摘　　要：利用790 nm半导体激光器作为泵浦源、声光调制器作为Q开关,将4 m长掺铥双包层D型光纤作为增益光纤,在入纤功率9.17 W、调制频率50 kHz时,获得激光器最大输出功率为1.26 W.调制频率为30 kHz时,获得单脉冲能量40μJ的脉冲激光.激光器在30～50 kHz工作时可以获得稳定的脉冲输出.讨论了在阈值入纤功率附近形成1/2、1/3调制频率脉冲及在较大泵浦功率时形成多脉冲的原因.An acoustic-optical Q-switched thulium-doped fiber laser pumped by a 790 nm diode laser was investigated in this experiment. A 4 m-long thulium-doped double cladding D-shaped fiber was adopted as the active fiber. When the launched pump power is 9.17 W, the maximum output power of 1.26 W at the repetition rate of 50 kHz was obtained while the maximum single pulse energy was 40μL at the repetition rates of 30 kHz. Stable pulses could be achieved at the repetition rates from 30 kHz to 50 kHz. The cause of the pulses with 1/2 and 1/3 modulation frequency generated near the threshold launched pump power was analyzed. In addition, the reason for multi pulses at high pump power was also examined.

关 键 词：光电子与激光技术 铥 双包层光纤 声光调制器 主动调Q 光纤激光器 

分 类 号：TN248[电子电信—物理电子学]