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Proceedings Paper

Active cooling solutions for high power laser diodes stacks
Author(s): Yoram Karni; Genady Klumel; Moshe Levy; Yuri Berk; Yaki Openhaim; Yaakov Gridish; Asher Elgali; Meir Avisar; Moshe Blonder; Hila Sagy; Alex Gertsenshtein
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Paper Abstract

High power water cooled diode lasers find increasing demand in biomedical, cosmetic and industrial applications, where very high brightness and power are required. The high brightness is achieved either by increasing the power of each bar or by reducing the emitting area of the stacks. Two new products will be presented: Horizontal CW stacks with output power as high as 1kW using 80 W bars with emitting area width as low as 50 μm; Vertical QCW stacks with output power as high as 1.2kW using 120 W bars. Heat removal from high power laser stacks often requires microchannel coolers operated with finely filtered deionized (DI) water. However, for certain industrial applications the reliability of this cooling method is widely considered insufficient due to leakage failures caused the highly corrosive DI water. Two solutions to the above problem will be discussed. A microchannel cooler-based package, which vastly reduces the corrosion problem, and a novel high-power laser diode stack that completely eliminates it. The latter solution is especially effective for pulsed applications in high duty cycle range.

Paper Details

Date Published: 25 February 2008
PDF: 9 pages
Proc. SPIE 6876, High-Power Diode Laser Technology and Applications VI, 687604 (25 February 2008); doi: 10.1117/12.765156
Show Author Affiliations
Yoram Karni, Semiconductor Devices (Israel)
Genady Klumel, Semiconductor Devices (Israel)
Moshe Levy, Semiconductor Devices (Israel)
Yuri Berk, Semiconductor Devices (Israel)
Yaki Openhaim, Semiconductor Devices (Israel)
Yaakov Gridish, Semiconductor Devices (Israel)
Asher Elgali, Semiconductor Devices (Israel)
Meir Avisar, Semiconductor Devices (Israel)
Moshe Blonder, Semiconductor Devices (Israel)
Hila Sagy, Semiconductor Devices (Israel)
Alex Gertsenshtein, Semiconductor Devices (Israel)

Published in SPIE Proceedings Vol. 6876:
High-Power Diode Laser Technology and Applications VI
Mark S. Zediker, Editor(s)

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