Wavelength-stabilized fiber-coupled diode laser with 500 W output and 20 mm × mrad beam quality

D. M. Grasso; N. Shou; H. Chen; R. Pathak; P. Liang; S. D. Roh; D. Lee

doi:10.1117/12.921592

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7 May 2012 Wavelength-stabilized fiber-coupled diode laser with 500 W output and 20 mm•mrad beam quality

D. M. Grasso, N. Shou, H. Chen, R. Pathak, P. Liang, S. D. Roh, D. Lee

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Proceedings Volume 8381, Laser Technology for Defense and Security VIII; 83810K (2012) https://doi.org/10.1117/12.921592
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

We report the development of a fiber-coupled diode laser module with high spatial and spectral brightness. Four arrays of diode laser bars are multiplexed using polarization and narrow-band wavelength combination. The module achieves 500 W of output power from a 200 μm, 0.2 NA fiber. The output spectrum, composed of contributions from more than 150 emitters, is narrowed using VBGs and has nearly 100% content within +/- 1.5 nm of 975 nm at full power.

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D. M. Grasso, N. Shou, H. Chen, R. Pathak, P. Liang, S. D. Roh, and D. Lee "Wavelength-stabilized fiber-coupled diode laser with 500 W output and 20 mm•mrad beam quality", Proc. SPIE 8381, Laser Technology for Defense and Security VIII, 83810K (7 May 2012); https://doi.org/10.1117/12.921592

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