Record-brightness laser-diode bars for fiber coupling

M. Dogan; R. Pathak; S. Ellison; H. Eppich; G. Campbell; J. Vignati; J. H. Jacob; K. D. Lang; R. H. Chin; M. T. Knapczyk; W. Sun; S. F. Fulghum; A. K. Chin

doi:10.1117/12.908673

8 February 2012 Record-brightness laser-diode bars for fiber coupling

M. Dogan, R. Pathak, S. Ellison, H. Eppich, G. Campbell, J. Vignati, J. H. Jacob, K. D. Lang, R. H. Chin, M. T. Knapczyk, W. Sun, S. F. Fulghum, A. K. Chin

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Proceedings Volume 8241, High-Power Diode Laser Technology and Applications X; 82410G (2012) https://doi.org/10.1117/12.908673
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

High brightness, laser-diode bars are required for efficient coupling into small-core optical-fibers. Record power and brightness results were achieved using 20% fill-factor, 980nm, 1cm-wide, 4mm cavity-length bars. Lifetimes of single bars, operated CW at 200W and 20°C, exceed 1000hr. Due to superb thermal management, the power conversion efficiency (PCE) exceeds 60% at 200W output power. Similar lifetime and PCE were obtained for a 3-bar stack emitting 600W output power.

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M. Dogan, R. Pathak, S. Ellison, H. Eppich, G. Campbell, J. Vignati, J. H. Jacob, K. D. Lang, R. H. Chin, M. T. Knapczyk, W. Sun, S. F. Fulghum, and A. K. Chin "Record-brightness laser-diode bars for fiber coupling", Proc. SPIE 8241, High-Power Diode Laser Technology and Applications X, 82410G (8 February 2012); https://doi.org/10.1117/12.908673

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