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Proceedings Paper

Lifetime testing of laser diode coolers
Author(s): Thomas Löffler; Andreas Meyer; Karsten Schmidt; Manfred Götz; Ken Credle
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Paper Abstract

The purpose of this paper is to report life-testing results of a copper micro-channel cooler [MCC] for high power diode laser [HPDL] bars. The testing is being done on MCC's with 3 different internal designs at three different flow rates, ranging from 0.2 l/min. to 0.5 l/min. Water conductivity is kept constant at 5 micro-Siemens/cm, and the water temperature is maintained at 25C. The MCC's do not have a voltage applied to them. The test is ongoing, but results up to 15,000 hours will be reported. Preliminary results indicate that lifetimes over 20k hours can be achieved with proper control of conductivity, and that flow rate and internal structure are secondary considerations compared to water quality.

Paper Details

Date Published: 7 February 2007
PDF: 10 pages
Proc. SPIE 6456, High-Power Diode Laser Technology and Applications V, 64561F (7 February 2007); doi: 10.1117/12.700347
Show Author Affiliations
Thomas Löffler, Curamik Electronics GmbH (Germany)
Andreas Meyer, Curamik Electronics GmbH (Germany)
Karsten Schmidt, Curamik Electronics GmbH (Germany)
Manfred Götz, Electrovac curamik GmbH (Germany)
Ken Credle, Curamik Electronics, Inc. (United States)

Published in SPIE Proceedings Vol. 6456:
High-Power Diode Laser Technology and Applications V
Mark S. Zediker, Editor(s)

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