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Proceedings Paper

High-power, fiber-coupled stack arrays for pump applications
Author(s): O. Romero; C.-H. Chen; J. Harrison; T. Towe; S. Ginter; H. Li; I. Chyr; J. Johnson; J. Egan; K. Dinh
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Paper Abstract

Here we present details of the design and performance of a family of compact, fiber-coupled, multi-bar, laser-diode stacks. The highest-power variant employs a pair of 6-bar stacks and a removable 400-μm, 0.22 NA fiber to deliver >400 W at 50 A. The overall power conversion efficiency (PCE) near 976-nm exceeds 40% at 400 W in CW operation with an uncoated delivery fiber. The brightest variant reaches a power density near 800-kW/cm2 at 976-nm through a 200-μm, 0.22 NA fiber. Module variants have been built and characterized at multiple wavelengths between 780-nm and 980-nm. Applications for such modules include pumping of active fibers, pumping of rubidium vapor and direct material processing.

Paper Details

Date Published: 25 February 2008
PDF: 7 pages
Proc. SPIE 6876, High-Power Diode Laser Technology and Applications VI, 687611 (25 February 2008); doi: 10.1117/12.764039
Show Author Affiliations
O. Romero, Spectra-Physics Lasers (United States)
C.-H. Chen, Spectra-Physics Lasers (United States)
J. Harrison, Spectra-Physics Lasers (United States)
T. Towe, Spectra-Physics Lasers (United States)
S. Ginter, Spectra-Physics Lasers (United States)
H. Li, Spectra-Physics Lasers (United States)
I. Chyr, Spectra-Physics Lasers (United States)
J. Johnson, Spectra-Physics Lasers (United States)
J. Egan, Spectra-Physics Lasers (United States)
K. Dinh, 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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