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Proceedings Paper

High-efficiency, high-power diode laser chips, bars, and stacks
Author(s): Hanxuan Li; Frank Reinhardt; Irving Chyr; Xu Jin; Kiran Kuppuswamy; Terry Towe; Denny Brown; Oscar Romero; Daming Liu; Robert Miller; Touyen Nguyen; Trevor Crum; Tom Truchan; Ed Wolak; Jeff Mott; James Harrison
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Paper Abstract

Leveraging improvements to device structures and cooling technologies, ultra-high-power bars have been integrated into multi-bar stacks to obtain CW power densities in excess of 2.8 kW/cm2 near 960 nm with spectral widths of <4nm FWHM. These characteristics promise to enable cost-effective solutions for a variety of applications that demand very high spatial and/or spectral brightness. Using updated device designs, mini-bar variants have been employed to derive CW powers of several tens of Watts near 940 nm on traditional single-emitter platforms. For example, >37 W CW have been obtained from 5-emitter devices on standard CuW CT heatsinks with AuSn solder. Near 808 nm, a PCE of 65% with a slope efficiency of 1.29 W/A has been demonstrated with a 20%-fill-factor, 2-mm-cavity-length bar.

Paper Details

Date Published: 13 February 2008
PDF: 6 pages
Proc. SPIE 6876, High-Power Diode Laser Technology and Applications VI, 68760G (13 February 2008); doi: 10.1117/12.763945
Show Author Affiliations
Hanxuan Li, Spectra-Physics Lasers (United States)
Frank Reinhardt, Spectra-Physics Lasers (United States)
Irving Chyr, Spectra-Physics Lasers (United States)
Xu Jin, Spectra-Physics Lasers (United States)
Kiran Kuppuswamy, Spectra-Physics Lasers (United States)
Terry Towe, Spectra-Physics Lasers (United States)
Denny Brown, Spectra-Physics Lasers (United States)
Oscar Romero, Spectra-Physics Lasers (United States)
Daming Liu, Spectra-Physics Lasers (United States)
Robert Miller, Spectra-Physics Lasers (United States)
Touyen Nguyen, Spectra-Physics Lasers (United States)
Trevor Crum, Spectra-Physics Lasers (United States)
Tom Truchan, Spectra-Physics Lasers (United States)
Ed Wolak, Spectra-Physics Lasers (United States)
Jeff Mott, Spectra-Physics Lasers (United States)
James Harrison, Spectra-Physics Lasers (United States)


Published in SPIE Proceedings Vol. 6876:
High-Power Diode Laser Technology and Applications VI
Mark S. Zediker, Editor(s)

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