26 February 2018 Next-generation fiber lasers enabled by high-performance components
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Next-generation industrial fiber lasers enable challenging applications that cannot be addressed with legacy fiber lasers. Key features of next-generation fiber lasers include robust back-reflection protection, high power stability, wide power tunability, high-speed modulation and waveform generation, and facile field serviceability. These capabilities are enabled by high-performance components, particularly pump diodes and optical fibers, and by advanced fiber laser designs. We summarize the performance and reliability of nLIGHT diodes, fibers, and next-generation industrial fiber lasers at power levels of 500 W – 8 kW. We show back-reflection studies with up to 1 kW of back-reflected power, power-stability measurements in cw and modulated operation exhibiting sub-1% stability over a 5 – 100% power range, and high-speed modulation (100 kHz) and waveform generation with a bandwidth 20x higher than standard fiber lasers. We show results from representative applications, including cutting and welding of highly reflective metals (Cu and Al) for production of Li-ion battery modules and processing of carbon fiber reinforced polymers.
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D. A. V. Kliner, D. A. V. Kliner, B. Victor, B. Victor, C. Rivera, C. Rivera, G. Fanning, G. Fanning, D. Balsley, D. Balsley, R. L. Farrow, R. L. Farrow, K. Kennedy, K. Kennedy, S. Hampton, S. Hampton, R. Hawke, R. Hawke, E. Soukup, E. Soukup, M. Reynolds, M. Reynolds, A. Hodges, A. Hodges, J. Emery, J. Emery, A. Brown, A. Brown, K. Almonte, K. Almonte, M. Nelson, M. Nelson, B. Foley, B. Foley, D. Dawson, D. Dawson, D. M. Hemenway, D. M. Hemenway, W. Urbanek, W. Urbanek, M. DeVito, M. DeVito, L. Bao, L. Bao, J. Koponen, J. Koponen, K. Gross, K. Gross, } "Next-generation fiber lasers enabled by high-performance components", Proc. SPIE 10513, Components and Packaging for Laser Systems IV, 105130S (26 February 2018); doi: 10.1117/12.2292271; https://doi.org/10.1117/12.2292271

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