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Proceedings Paper

KW-class industrial diode lasers comprised of single emitters
Author(s): Kirk Price; Frank Pfeffer; Paul Leisher; Scott Karlsen; Robert Martinsen
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Paper Abstract

Direct semiconductor diode laser-based systems have emerged as the preferred tool to address a wide range of material processing, solid-state and fiber laser pumping, and various military applications. We present an architectural framework and prototype results for kW-class laser tools based on single emitters that addresses a range of output powers (500W to multiple kW) and beam parameter products (20 to 100 mm-mrad) in a system with an operating efficiency near 50%. nLIGHT uses a variety of building blocks for these systems: a 100W, 105um, 0.14 NA pump module at 9xx nm; a 600W, 30 mm-mrad single wavelength, single polarization building block source; and a 140 W 20 mm-mrad low-cost module. The building block is selected to realize the brightness and cost targets necessary for the application. We also show how efficiency and reliability can be engineered to minimize operating and service costs while maximizing system up-time. Additionally we show the flexibility of this system by demonstrating systems at 8xx, 9xx, and 15xx nm. Finally, we investigate the diode reliability, FIT rate requirements, and package impact on system reliability.

Paper Details

Date Published: 17 February 2010
PDF: 9 pages
Proc. SPIE 7583, High-Power Diode Laser Technology and Applications VIII, 75830E (17 February 2010); doi: 10.1117/12.842164
Show Author Affiliations
Kirk Price, nLIGHT Corp. (United States)
Frank Pfeffer, nLIGHT Corp. (United States)
Paul Leisher, nLIGHT Corp. (United States)
Scott Karlsen, nLIGHT Corp. (United States)
Robert Martinsen, nLIGHT Corp. (United States)

Published in SPIE Proceedings Vol. 7583:
High-Power Diode Laser Technology and Applications VIII
Mark S. Zediker, Editor(s)

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