强激光与粒子束, 2015, 27 (6): 061012, 网络出版: 2015-06-17
高功率高效率光纤耦合半导体激光模块研制
High power high efficiency fiber coupled diode laser module
半导体阵列 光束整形 光纤耦合 高功率 高耦合效率 diode laser bar beam shaping fiber coupling high power high coupling-efficiency
摘要
采用光束整形和空间合束的方法,研制出高功率、高效率多阵列光纤耦合半导体激光模块.将波长为976 nm连续工作的5个标准半导体阵列,通过对快轴进行准直和快慢轴光束旋转的方式进行光束整形,准直后进行空间合束,经耦合透镜聚焦,耦合入芯径400 μm、数值孔径0.22的光纤.测量结果显示:光纤的出光功率最大可达到327 W,光纤耦合效率大于93.6%.
Abstract
The high coupling-efficiency fiber coupled diode laser module is obtained by beam shaping.The wavelength of the CW diode laser bar is 976 nm,and five bars are collimated by a fast axis collimation lens.Then the beams are transformed and collimated by slow axis collimation optics.Then all the beams are combined in space,and focused into a multimode fiber (400 μm core diameter,the numerical aperture (NA) is 0.22).Experimental results show that the laser output from fiber could reach 327 W,and the coupling-efficiency is more than 93.6%.Experimental results demonstrate that this module lays a foundation for multi-wavelength,polarization beam combining and the high beam quality,high coupling efficiency diode laser module with CW thousands watts class output power can be developed.
徐丹, 黄雪松, 姜梦华, 惠勇凌, 雷訇, 李强. 高功率高效率光纤耦合半导体激光模块研制[J]. 强激光与粒子束, 2015, 27(6): 061012. Xu Dan, Huang Xuesong, Jiang Menghua, Hui Yongling, Lei Hong, Li Qiang. High power high efficiency fiber coupled diode laser module[J]. High Power Laser and Particle Beams, 2015, 27(6): 061012.
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