波长啁啾体布拉格光栅外腔实现激光二极管阵列的波长光束组合  

Wavelength beam combining of laser diode array by wavelength-chirped volume Bragg grating external cavity

作　　者：刘波[1] 张雪[1] 韩军婷[1] 惠勇凌[1] 姜梦华[1] 李强[1] 

机构地区：[1]北京工业大学激光工程研究院,北京100022

出　　处：《强激光与粒子束》2008年第7期1057-1062,共6页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(10276003);北京市自然科学基金重点项目(4051001)

摘　　要：采用波长啁啾体布拉格光栅外腔,利用多波长光束组合技术成功实现了由49个发光单元构成、阵列发光单元宽度为100μm、填充因子为0.5的标准1 cm阵列的输出光的光束组合连续工作时,实验获得组合输出光束平均功率为11.2 W的近圆形光斑输出,其快慢轴方向光束质量平方因子约为6,最大工作电流对应的组合效率约为30%。通过进一步实验验证其最大工作电流时组合效率可达64%,并对其技术优势和应用前景做了讨论。With an external cavity containing a wavelength-chirped volume Bragg grating, multi-wavelength beam combining is realized with a standard bar of 49 emitters. The width of the emitter is 100μm, and the fill factor is 0.5. Beam quality factor of 6 for both the fast axis and the slow axis is achieved at CW operating, and a nearly round output spot of high intensity with a peak power of 11.2 W is gotten. The efficiency at the maximum operating current is about 30%. An efficiency of 64% at maximum working current is proven in a more detailed experimental study. The technical advantages and possible applications are discussed.

关 键 词：波长啁啾体布拉格光栅 二极管激光阵列 多波长光束组合 衍射光栅 

分 类 号：TN248[电子电信—物理电子学]