中国激光, 2009, 36 (5): 1097, 网络出版: 2009-05-22
双平行平面反射镜在激光二极管阵列光束整形中的应用
Study of the Beam Shaping of Laser Diode Arrays Using Two Parallel Plane Mirrors
激光技术 光束整形 双平行平面反射镜 激光二极管阵列 光纤耦合 高亮度 laser technique beam-shaping two parallel plane mirrors laser diode array fiber coupling high brightness
摘要
为了实现激光二极管阵列(LDA)的高亮度光纤耦合输出, 设计了一套简单有效的光束整形系统。首先采用快慢轴准直透镜压缩LDA的发散角, 然后采用双平行平面反射镜光束整形装置, 将压缩后的LDA慢轴方向的光束分为4束(也可以根据需要分为任意多束), 并将4束子光束在快轴方向重新排列, 最后通过聚焦系统, 将整形后的光束耦合进入芯径600 μm, 数值孔径0.37的光纤。实验测得双平行平面反射镜整形装置的效率为98.87％, 系统的整体效率为 77.2％。该整形系统设计简单, 效率高, 具有很高的应用价值。
Abstract
In order to achieve high brightness fiber-coupled output of diode laser array, a simple but efficient system was designed. Firstly, the output beam from a laser diode arrays (LDA) was collimated by fast and slow axis collimation module. Secondly, the collimated beam in the slow axis was divided into 4 parts (any other amount of the divided parts if needed) by the beam-shaping set of two parallel plane mirrors, and then reordered in the fast axis. Finally, the shaped beams were focused into a fiber (600 μm, NA=0.37) by a focusing lens. The beam-shaping efficiency was 98.87％, and the total system efficiency was 77.2％. This beam-shaping system is simple but effective and useful.
王翠鸾, 韩淋, 吴芃, 刘媛媛, 李伟, 冯小明, 王勇刚, 刘素平, 马骁宇. 双平行平面反射镜在激光二极管阵列光束整形中的应用[J]. 中国激光, 2009, 36(5): 1097. Wang Cuiluan, Han Lin, Wu Peng, Liu Yuanyuan, Li Wei, Feng Xiaoming, Wang Yonggang, Liu Suping, Ma Xiaoyu. Study of the Beam Shaping of Laser Diode Arrays Using Two Parallel Plane Mirrors[J]. Chinese Journal of Lasers, 2009, 36(5): 1097.
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