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9 September 2019 Variable beam high power fiber laser with optimized beam characteristics for metal cutting
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Abstract
Industrial lasers used for materials processing have become essential tools in a wide array of applications, including cutting, welding, drilling, cladding, marking, hardening, and additive manufacturing. The speed, quality, and process window are determined in part by the laser beam properties such as beam size, shape, and divergence. nLIGHT has developed a new multi-kilowatt fiber laser, Corona™, that provides rapid tunability of the beam characteristics directly from the laser output fiber using a novel, all-fiber mechanism. Programmable beam shapes include flat top and donut beams with beam diameters from 100 μm to 390 μm and beam parameter products from 3 to 20 mm-mrad (M2 values from 9 to 59). We describe the Corona fiber laser performance and show processing results and advantages of specific beam shapes for sheet-metal cutting, the largest industrial laser application.
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
B. O'Dea, R. L. Farrow, B. Victor, J. Lugo, R. Hawke, K. Gross, A. Hodges, A. Brown, M. Nelson, B. Foley, Y. Chen, K. Almonte, D. Dye, M. Reynolds, K. Kennedy, D. Swenson, and D. A. V. Kliner "Variable beam high power fiber laser with optimized beam characteristics for metal cutting", Proc. SPIE 11107, Laser Beam Shaping XIX, 111070J (9 September 2019); https://doi.org/10.1117/12.2528809
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