用于不锈钢薄板切割的直接半导体激光源

张俊; 彭航宇; 朱洪波; 秦莉; 宁永强; 王立军

doi:doi:10.3788/fgxb20153610.1188

发光学报, 2015, 36 (10): 1188, 网络出版: 2016-01-19

用于不锈钢薄板切割的直接半导体激光源

Direct Diode Laser Source for Stainless Sheet Cutting

论文大纲

张俊 ^*彭航宇朱洪波秦莉宁永强王立军

作者单位

发光学及应用国家重点实验室中国科学院长春光学精密机械与物理研究所,吉林长春130033

半导体激光器不锈钢薄板切割激光合束光纤耦合 diode laser stainless sheet cutting laser coupling fiber coupled

摘要

针对高功率半导体激光器存在的光束质量差、单元功率低的缺点，利用合束技术来提高激光功率及光束质量，配合QBH光纤前端帽优化聚焦镜以实现高效耦合。采用11个条宽5.4 mm的迷你线阵合束，通过光束整形、空间合束、偏振合束和波长合束，聚焦耦合进200 μm/0.2光纤。在50 A电流下，实现连续386 W输出，功率密度为1.23 MW/cm2，电光效率为43.6%。在200 W的功率下，该激光器可以切割厚度为1 mm的不锈钢薄板。

Abstract

11 mini-bars with a width of 5.4 mm were coupled into a 200 μm/0.2 QBH fiber by beam shaping,spatial overlapping,polarization multiplexing,and wavelength multiplexing. The diode laser source with a continuous wavelength power of 386 W,a power density of 1.23 MW/cm2 and the electro-optical (E-O) efficiency of 43.6% at 50 A emitting from the fiber is developed. This laser source has been employed to directly cut the stainless sheet with the thickness of 1 mm at the output power of 200 W.

参考文献

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张俊, 彭航宇, 朱洪波, 秦莉, 宁永强, 王立军. 用于不锈钢薄板切割的直接半导体激光源[J]. 发光学报, 2015, 36(10): 1188. ZHANG Jun, PENG Hang-yu, ZHU Hong-bo, QIN Li, NING Yong-qiang, WANG Li-jun. Direct Diode Laser Source for Stainless Sheet Cutting[J]. Chinese Journal of Luminescence, 2015, 36(10): 1188.

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