双端输出光纤激光器互注入锁相研究  

Mutual Injection Phase-Locked Study of Fiber Laser with Two Output Ports

作　　者：朱孟真[1] 黄长春[2] 程勇[1] 刘洋[1] 米朝伟[1] 王会升[1] 万强[1] 

机构地区：[1]武汉军械士官学校光电研究所,湖北武汉430075 [2]河南工业职业技术学院机械工程系,河南南阳473009

出　　处：《中国激光》2010年第12期2964-2968,共5页Chinese Journal of Lasers

基　　金：国防预研项目(51302010206)资助课题

摘　　要：为了获得高功率、高光束质量相干光纤激光输出,设计了一种双端输出的光纤激光器。两路光纤激光器尾端通过反射率为85%的光纤布拉格光栅连接,有一定的相互关联,利用角锥反射器使其能量相互注入,实现锁相,并利用偏振片分光,实现相干合成输出。实验上,在远场得到了清晰稳定的干涉条纹(可见度约为0.92),获得了8.6 W的相干合成激光输出,对应的功率合成效率约为90%。实验结果表明,该方案结构简单,稳定性好,相干度高,并可用于多路激光相干合成,为实现高功率光纤激光相干合成输出提供了一种新的思路。A novel fiber laser with two output ports is designed to realize high power and high quality fiber laser coherent beam combining output.The two fiber lasers associated with each other are connected by a fiber bragg grating（FBG）（R=0.85 at 1085 nm）.Based on a corner-cube,the energy is mutual injected with each other.And by a polarizer,coherent beam combining output is realized.Through experiments,steady interference stripes with high contrast ratio（about 0.92） are observed and 8.6 W output power is achieved which indicate that the power combining efficiency is approximately 90%.This combining method can be scaled to a large number of lasers.Successful attempts of phase-locked show that this method may provide a promising way in the field of fiber laser coherent combining.

关 键 词：激光技术 相干合成 关联光纤激光器 角锥 偏振片 

分 类 号：TN248[电子电信—物理电子学]