【作者】 郭林辉； 高松信； 吕文强； 雷军； 武德勇； 唐淳；

【Author】 GUO Lin-hui,GAO Song-xin,LV Wen-qiang,LEI Jun,WU De-yong,TANG Chun(Institute of Applied Electronics,CAEP,P.O.Box 919-1013,Mianyang 621900,China)

【机构】 中国工程物理研究院应用电子学研究所；

【摘要】 为实现二极管激光器(DL)叠阵输出光束具有小发散角、高指向精度,提高阵列的能量耦合效率。分析了smile大小对光束准直的影响,采用CCD对DL线阵发光面成像及光斑强度求质心的方法测量了较小的smile,对DL叠阵使用线阵的smile进行了有效控制。通过实时监测DL线阵的近场像和远场像来指导透镜装调,优化了微透镜装配工艺,含20个DL线阵连续输出2kW叠阵获得了快轴远场发散角(1/e2)4.4mrad、线阵间准直光束指向精度不大于±1.7mrad的准直效果。更多还原

【Abstract】 To improve the efficiency of the diode laser stack of energy coupling,diode laser stack for the realization of the output beam with small divergence angle and high pointing accuracy.Analyzed the size of smile effect of beam collimation,via laser emitters imaging with CCD and facula intensity-based centroid algorithm,the smile of diode laser array is measured.The size of smile of the diode laser array of stack were controled.FAC lens mounted to diode laser stack by optical imaging with real time monitoring,corresponded to diode laser array as the near field and far field image respectively,the results of collimation beam’s far field divergence angle of(1/e2) 4.4mrad,pointing accuracy among bars less than ±1.7mrad for continuous work 2kW for diode laser stack.更多还原