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Proceedings Paper

DPSSL and FL pumps based on 980-nm telecom pump laser technology: changing the industry
Author(s): Norbert Lichtenstein; Berthold E. Schmidt; Arnaud Fily; Stefan Weiss; Sebastian Arlt; Susanne Pawlik; Boris Sverdlov; Jurgen Muller; Christoph S. Harder
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Paper Abstract

Diode-pumped solid state laser (DPSSL) and fiber laser (FL) are believed to become the dominant systems of very high power lasers in the industrial environment. Today, ranging from 100 W to 5 - 10 kW in light output power, their field of applications spread from biomedical and sensoring to material processing. Key driver for the wide spread of such systems is a competitive ratio of cost, performance and reliability. Enabling high power, highly reliable broad-area laser diodes and laser diode bars with excellent performance at the relevant wavelengths can further optimize this ratio. In this communication we present, that this can be achieved by leveraging the tremendous improvements in reliability and performance together with the high volume, low cost manufacturing areas established during the "telecom-bubble." From today's generations of 980-nm narrow-stripe laser diodes 1.8 W of maximum CW output power can be obtained fulfilling the stringent telecom reliability at operating conditions. Single-emitter broad-area lasers deliver in excess of 11 W CW while from similar 940-nm laser bars more than 160 W output power (CW) can be obtained at 200 A. In addition, introducing telecom-grade AuSn-solder mounting technology on expansion matched subassemblies enables excellent reliability performance. Degradation rates of less than 1% over 1000 h at 60 A are observed for both 808-nm and 940-nm laser bars even under harsh intermittent operation conditions.

Paper Details

Date Published: 1 June 2004
PDF: 7 pages
Proc. SPIE 5336, High-Power Diode Laser Technology and Applications II, (1 June 2004); doi: 10.1117/12.558737
Show Author Affiliations
Norbert Lichtenstein, Bookham AG (Switzerland)
Berthold E. Schmidt, Bookham AG (Switzerland)
Arnaud Fily, Bookham AG (Switzerland)
Stefan Weiss, Bookham AG (Switzerland)
Sebastian Arlt, Bookham AG (Switzerland)
Susanne Pawlik, Bookham AG (Switzerland)
Boris Sverdlov, Bookham AG (Switzerland)
Jurgen Muller, Bookham AG (Switzerland)
Christoph S. Harder, Bookham AG (Switzerland)

Published in SPIE Proceedings Vol. 5336:
High-Power Diode Laser Technology and Applications II
Mark S. Zediker, Editor(s)

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