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
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.
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.