基于磁旋光玻璃的高效单频环形激光器设计  

High Efficiency Single Frequency Ring Laser Based on Magnetic Optical Rotation Glass

作　　者：薛竣文[1] 李坤[2] 方宇杰[1] 谢海军[1] 苏秉华[1,2] 

机构地区：[1]北京理工大学珠海学院,珠海广东519088 [2]北京理工大学,北京100081

出　　处：《光电子技术》2016年第2期122-125,129,共5页Optoelectronic Technology

基　　金：广东省高等学校优秀青年教师培养计划(No.Yq2013208);广东省高等学校优秀青年创新人才培养计划育苗工程(自然科学)(No.2013LYM_0101);北京理工大学珠海学院科研发展基金(No.2013JS02)资助

摘　　要：使用具有偏振吸收偏振发射等优良光学性能的Nd:YVO4为工作物质,通过选用880nm激光二极管泵浦,降低量子亏损,提高效率,降低阈值和热效应,分析了谐振腔长度和反射率对单纵模线宽的影响,合理设计热稳定四镜环形腔。基于磁旋光玻璃MR3-2外加永久磁铁的法拉第旋转器,结合1/2波片和工作物质的偏振发射特性构成单向器,获得激光器单向运转。在泵浦功率为5 W时,获得了输出功率2.75 W,效率55%,斜效率65%,线宽66.7 MHz的1 064nm激光的稳定单频运转,2小时功率稳定度优于0.2%。The influence of cavity length and mirror reflectivity on single longitudinal mode line width was analyzed. Nd：YVO4 was used as gain media, because of its excellent optical prop- erties, such as the polarized absorption and emission. 880 nm LD was used to reduce the quan- tum defect, improve efficiency and reduce the threshold and thermal effect. Four-mirror ring cavity with good thermal stability was designed. The permanent magnet was applied to the magnetic rotation optical glass MR3-2. Faraday rotator was realized by combination of half-wave plate and Nd：YVO4 polarized emission. The laser achieved unidirectional operation in the end. When the ptamp power was 5 W, the output power of 2.75 W, the efficiency of 55%, the slope efficiency of 65%, the line width of 1 064 nm 66.7 MHz, and the power stability better than 0.2% in 2 hours were obtained.

关 键 词：环形腔 单频 全固体 激光器 

分 类 号：TN248[电子电信—物理电子学]