Share Email Print
cover

Proceedings Paper

20W continuous wave reliable operation of 980nm broad-area single emitter diode lasers with an aperture of 96um
Author(s): P. Crump; G. Blume; K. Paschke; R. Staske; A. Pietrzak; U. Zeimer; S. Einfeldt; A. Ginolas; F. Bugge; K. Häusler; P. Ressel; H. Wenzel; G. Erbert
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

High power broad area diode lasers provide the optical energy for all high performance solid state and fiber laser systems. The maximum achievable power density from such systems is limited at source by the performance of the diode lasers. A crucial metric is the reliable continuous wave optical output power from a single broad area laser diode, typically for stripe widths in the 90-100 μm range, which is especially important for users relying on fibered multi-mode pumps. We present the results of a study investigating the reliable power limits of such 980nm sources. We find that 96μm stripe single emitters lasers at 20°C operate under continuous wave power of 20W per emitter for over 4000 hours (to date) without failure, with 60μm stripe devices operating reliably at 10W per stripe. Maximum power testing under 10Hz, 200μs QCW drive conditions shows that 96μm stripes reach 30W and 60μm stripes 21W per emitter, significantly above the reliable operation point. Results are also presented on step-stress-studies, where the current is step-wise increased until failure is observed, in order to clarify the remaining reliability limits. Finally, we detail the barriers to increased peak power and discuss how these can be overcome.

Paper Details

Date Published: 24 February 2009
PDF: 9 pages
Proc. SPIE 7198, High-Power Diode Laser Technology and Applications VII, 719814 (24 February 2009); doi: 10.1117/12.807263
Show Author Affiliations
P. Crump, Ferdinand-Braun-Institut für Höchstfrequenztechnik (Germany)
G. Blume, Ferdinand-Braun-Institut für Höchstfrequenztechnik (Germany)
K. Paschke, Ferdinand-Braun-Institut für Höchstfrequenztechnik (Germany)
R. Staske, Ferdinand-Braun-Institut für Höchstfrequenztechnik (Germany)
A. Pietrzak, Ferdinand-Braun-Institut für Höchstfrequenztechnik (Germany)
U. Zeimer, Ferdinand-Braun-Institut für Höchstfrequenztechnik (Germany)
S. Einfeldt, Ferdinand-Braun-Institut für Höchstfrequenztechnik (Germany)
A. Ginolas, Ferdinand-Braun-Institut für Höchstfrequenztechnik (Germany)
F. Bugge, Ferdinand-Braun-Institut für Höchstfrequenztechnik (Germany)
K. Häusler, Ferdinand-Braun-Institut für Höchstfrequenztechnik (Germany)
P. Ressel, Ferdinand-Braun-Institut für Höchstfrequenztechnik (Germany)
H. Wenzel, Ferdinand-Braun-Institut für Höchstfrequenztechnik (Germany)
G. Erbert, Ferdinand-Braun-Institut für Höchstfrequenztechnik (Germany)


Published in SPIE Proceedings Vol. 7198:
High-Power Diode Laser Technology and Applications VII
Mark S. Zediker, Editor(s)

© SPIE. Terms of Use
Back to Top