高光斑均匀度7×1光纤合束蓝光半导体激光器的研究  

Blue light semiconductor laser using 7×1 beam combiner with high spot uniformity

作　　者：王令武 张玲[2] 孟路平 于海娟[2] 邹淑珍[2] 陈寒[2] 杨盈莹[2] 杨松[2] 齐瑶瑶 何超建[2] 王玉 李再金 林学春[2] 

机构地区：[1]长春理工大学,高功率半导体激光国家重点实验室,长春130022 [2]中国科学院,半导体研究所全固态光源实验室,北京100083

出　　处：《激光杂志》2018年第3期15-17,共3页Laser Journal

基　　金：长春理工大学青年基金(No.000943);国家重点研发计划项目(No.2016YFB0402002,No.2016YFB0401804)

摘　　要：研究分析了高光斑均匀度7×1光纤合束的447nm蓝光半导体激光器。采用非球面透镜将每个输出功率为3.8W的蓝光半导体激光器,耦合进纤芯直径为200μm,数值孔径为0.22的7×1光纤合束器的光纤输入端,光纤耦合效率85%。7×1光纤合束器的输出光纤是直径400μm数值孔径0.46的多模光纤,光纤合束器对447nm蓝光半导体激光的传输效率为99%。测试结果表明采用7×1光纤合束器实现了22.4W蓝光激光输出,1个小时内RMS功率不稳定性为±0.13%,利用微透镜阵列将蓝光激光的光斑均匀度从56%提高到82%。为激光显示和高精度3D打印提供了理想的光源。We studied 447 nm blue light semiconductor laser using 7 × 1 beam combiner. Every blue light semicon- ductor laser with output power of 3.8 W was coupled into the input fiber of 7 × 1 beam combiner with a core diameter of 200 μm and numerical aperture of 0.22 using one aspherical lens. The fiber coupling efficiency was 85 %. The output fiber of the 7 × 1 beam combiner was a multi-mode fiber with diameter of 400 μm and numerical aperture of 0.46. The power transmission efficiency of fiber combiner was 99% for 447 nm blue light semiconductor laser. 22.4 W blue light laser was obtained using the fiber combiner with RMS power instability of ±0.13% within 1 hour. The spot uniformity of blue light laser was improved from 56% to 82% using micro-lens array. It is ideal light source for laser display and high precision 3D printing.

关 键 词：蓝光半导体激光器 合束器 光斑均匀度 

分 类 号：TN248[电子电信—物理电子学]