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Proceedings Paper

9xx-nm single emitter pumps for multi-kW systems
Author(s): V. Gapontsev; I. Berishev; G. Ellis; A. Komissarov; N. Moshegov; A. Ovtchinnikov; O. Raisky; P. Trubenko; V. Ackermann; E. Shcherbakov
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Paper Abstract

High-power high-brightness multimode edge emitting pumps have been developed. Comprehensive development efforts have resulted in 3 mm-long cavity diodes with far-field divergence reduced down to 26°. Output in excess of 20W CW from 90 μm-wide aperture single emitter was demonstrated for the first time. Peak power was reached at 25A CW driving current and was limited by power supply. Peak CW power efficiency was as high as 67%. Two coolerless package types designed to operate up to 10W output and up to 20W output are reported. About 95% fiber coupling efficiency into NA<0.12 was demonstrated in the entire range of driving currents for both types of pumps. For packages of the later design efficiency over 50% is maintained up to 16W CW ex-fiber output. Diode junction overheat above heatsink temperature is less than 20°C up to ~ 18W ex-fiber output.

Paper Details

Date Published: 15 February 2006
PDF: 11 pages
Proc. SPIE 6104, High-Power Diode Laser Technology and Applications IV, 61040K (15 February 2006); doi: 10.1117/12.646900
Show Author Affiliations
V. Gapontsev, IPG Photonics Corp. (United States)
I. Berishev, IPG Photonics Corp. (United States)
G. Ellis, IPG Photonics Corp. (United States)
A. Komissarov, IPG Photonics Corp. (United States)
N. Moshegov, IPG Photonics Corp. (United States)
A. Ovtchinnikov, IPG Photonics Corp. (United States)
O. Raisky, IPG Photonics Corp. (United States)
P. Trubenko, IPG Photonics Corp. (United States)
V. Ackermann, IPG Laser (Germany)
E. Shcherbakov, IPG Laser (Germany)


Published in SPIE Proceedings Vol. 6104:
High-Power Diode Laser Technology and Applications IV
Mark S. Zediker, Editor(s)

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