侧面分布式泵浦双包层脉冲光纤放大器  

Distributed Side-pump Double-cladding Pulse Fiber Amplifier

作　　者：黄榜才[1] 刘丰年[1] 徐玲玲[1] 段云峰[2] 张鹏[2] 宁鼎[2] 袁树忠[1] 董孝义[1] 

机构地区：[1]南开大学现代光学研究所,天津300071 [2]中国电子科技集团公司第四十六研究所,天津300220

出　　处：《激光与红外》2008年第9期879-882,共4页Laser & Infrared

基　　金：国家"973"计划项目(No.2003CB314906);天津自然基金项目(No.06YFJZJC00300);国家自然科学基金项目(No.10674074)资助

摘　　要：采用自行研制的光纤侧面耦合器,设计和研制了侧面分布式泵浦、两级全光纤连接的掺镱双包层脉冲光纤放大器,实现了输出波长为1064nm、平均输出功率达到2.12W、脉冲宽度20ns、重复频率50kHz的高功率、高重复频率全光纤结构脉冲光纤放大器。光纤侧面耦合器对泵浦光耦合效率最高达到69%,对反向信号光的隔离度最低为17dB,有效避免了高功率脉冲回波对泵浦光源的损害,使用更高泵浦耦合效率的侧面耦合器,可进一步提高放大器输出功率。The research of the distributed side-pump double-cladding pulse fiber amplifier is reported. A distributed side-pump,dual-stage all-fiber double-cladding pulse fiber amplifier is designed and developed with the home-made side-pump fiber couplers. The results of a high power, high repeat frequency all-fiber pulse fiber amplifier with a wavelength 1064nm, average output power 2.12W, pulse duration 20ns and a repeat frequency 50kHz is obtained. The max coupling efficiency and the minimal solation degree of the side-pump fiber coupler were 69% and 17dB respectively. The damage to the pump laser diodes of the backward high power pulse was avioded with the coupling method. Improving the coupling effeciency of the side-pump fiber coupler,the output power can be increased linearly.

关 键 词：脉冲光纤放大器 全光纤结构 高峰值功率 主振荡功率放大 受激拉曼散射 

分 类 号：TN253[电子电信—物理电子学]