基于Mini-bar 叠阵的百瓦级光栅-外腔光谱合束半导体激光光源

谭昊; 孟慧成; 余俊宏; 杜维川; 王昭; 郭林辉; 田飞; 卢飞; 李建民; 高松信; 武德勇

doi:doi:10.3788/aos201535.1114002

光学学报, 2015, 35 (11): 1114002, 网络出版: 2015-11-03

基于Mini-bar 叠阵的百瓦级光栅-外腔光谱合束半导体激光光源下载： 525次

Hundred-watt Level Spectral Beam Combining Diode Laser Source Based on Mini-Bar Stack

论文大纲

谭昊 ^1,2,*孟慧成 ^1,2余俊宏 ^1,2杜维川 ^1,2王昭 ^1,2郭林辉 ^1,2田飞 ^1,2卢飞 ^1,2李建民 ^1,2高松信 ^1,2武德勇 ^1,2

作者单位

¹ 中国工程物理研究院应用电子学研究所, 四川绵阳 621900

² 中国工程物理研究院高能激光科学与技术重点实验室, 四川绵阳 621900

激光器半导体激光器光谱合束外腔光栅 lasers semiconductor laser spectral beam combining external cavity diffraction grating

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摘要

半导体激光器光栅-外腔光谱合束是一种实现高亮度半导体激光(DL)输出的有效方法。本文采用mini-bar叠阵作为合束光源，有效减小了“smile”效应对合束效率的影响，匀化了合束后的快慢轴光束质量，便于进一步的光纤耦合输出。采用柱面镜作为外腔镜，有效抑制了合束中的互锁定现象，从而取代了传统的空间滤波，减小了系统规模。在工作电流为75A 时得到了159W 的高亮度DL 输出，合束光谱宽度为11.97 nm，电光效率为47.35%。当工作电流为60A 时，合束光的快慢轴光束质量分别为3.145 mm·mrad与3.554 mm·mrad。

Abstract

Spectral beam combining is an effective way to realize high brightness direct semiconductor laser output. A hundred watt level spectral beam combining scheme based on mini-bar stack is demonstrated. Due to the lower “smile”effect of mini-bar and equal beam quality in both axis of mini-bar stacks, this mini-bar stack based spectral beam combining scheme have more effective optical feedback compared to the standard cm-bar based spectral beam combining scheme. A cylindrical mirror as the output mirror to restrain the cross-talk between emitters is utilized instead of using a traditional spatial filter, which will also lower the system size. A spectral beam combining output of 159 W is achieved, with an electro-optical efficiency of 47.35% and spectral width of 11.97 nm. At the operating current of 60A, the beam quality of 3.145 mm · mrad (fast axis) and 3.554 mm · mrad (slow axis) is demonstrated by spectral beam combining.

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谭昊, 孟慧成, 余俊宏, 杜维川, 王昭, 郭林辉, 田飞, 卢飞, 李建民, 高松信, 武德勇. 基于Mini-bar 叠阵的百瓦级光栅-外腔光谱合束半导体激光光源[J]. 光学学报, 2015, 35(11): 1114002. Tan Hao, Meng Huicheng, Yu Junhong, Du Weichuan, Wang Zhao, Guo Linhui, Tian Fei, Lu Fei, Li Jianmin, Gao Songxin, Wu Deyong. Hundred-watt Level Spectral Beam Combining Diode Laser Source Based on Mini-Bar Stack[J]. Acta Optica Sinica, 2015, 35(11): 1114002.

基于Mini-bar 叠阵的百瓦级光栅-外腔光谱合束半导体激光光源下载： 525次

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