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Proceedings Paper

Copper-based micro-channel cooler reliably operated using solutions of distilled-water and ethanol as a coolant
Author(s): A. K. Chin; A. Nelson; R. H. Chin; R. Bertaska; J. H. Jacob
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Paper Abstract

Copper-based micro-channel coolers (Cu-MCC) are the lowest thermal-resistance heat-sinks for high-power laserdiode (LD) bars. Presently, the resistivity, pH and oxygen content of the de-ionized water coolant, must be actively controlled to minimize cooler failure by corrosion and electro-corrosion. Additionally, the water must be constantly exposed to ultraviolet radiation to limit the growth of micro-organisms that may clog the micro-channels. In this study, we report the reliable, care-free operation of LD-bars attached to Cu-MCCs, using a solution of distilledwater and ethanol as the coolant. This coolant meets the storage requirements of Mil-Std 810G, e.g. exposure to a storage temperature as low as -51°C and no growth of micro-organisms during passive storage.

Paper Details

Date Published: 13 March 2015
PDF: 8 pages
Proc. SPIE 9348, High-Power Diode Laser Technology and Applications XIII, 93480Y (13 March 2015); doi: 10.1117/12.2077203
Show Author Affiliations
A. K. Chin, Somerville Laser Technology, LLC (United States)
A. Nelson, Science Research Lab., Inc. (United States)
R. H. Chin, Science Research Lab., Inc. (United States)
R. Bertaska, New England Analytical, LLC (United States)
J. H. Jacob, Science Research Lab., Inc. (United States)

Published in SPIE Proceedings Vol. 9348:
High-Power Diode Laser Technology and Applications XIII
Mark S. Zediker, Editor(s)

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