NDLI: A corrosion and erosion protection coating for complex microchannel coolers used in high power laser diodes

Content Provider	IEEE Xplore Digital Library
Author	Desai, T.G. Flannery, M. Fan, A. Weyant, J. Eppich, H. Lang, K. Chin, R. Chin, A.
Copyright Year	2014
Description	Author affiliation: Sci. Res. Lab., Inc., Somerville, MA, USA (Eppich, H.; Lang, K.; Chin, R.; Chin, A.) \|\| Adv. Cooling Technol., Inc., Lancaster, PA, USA (Desai, T.G.; Flannery, M.; Fan, A.; Weyant, J.)
Abstract	With efficiencies in the range of 50-75%, significant amount of waste heat is generated during the operation of high power laser diodes. In order to maintain consistent optical performance, the temperature of the laser diode needs to be managed effectively. Single phase copper microchannel coolers (MCC) with high purity and low electrical conductivity de-ionized water (DIW) at high velocities are used to dissipate the heat. Though thermally beneficial, the high velocity, high purity DIW coolant exposes the copper MCC to erosion and corrosion damage [1]. This substantially decreases the thermal performance of MCC and requires costly replacement within a short duration. This paper presents the experimental validation of a new vapor deposition coating, developed by Advanced Cooling Technologies, Inc., (ACT) for enhanced protection of MCCs in high power laser diode systems. MCC samples with coating were exposed to accelerated erosion and corrosion testing in high velocity, high purity water that simulates laser diode operating conditions. Evaluation of thermal resistance, pressure drop, and optical properties of MCC stacks demonstrated significant improvements in erosion/corrosion protection provided by the coating without impeding the cooling performance of the MCCs. Hence, the coating will increase the lifetime of MCCs and reduce costly maintenance intervals.
Starting Page	64
Ending Page	71
File Size	1325946
Page Count	8
File Format	PDF
ISBN	9781479952670
ISSN	10879870
DOI	10.1109/ITHERM.2014.6892265
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-05-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coatings Diode lasers Corrosion Thermal resistance Copper Gold electrochemical impedance spectroscopy analysis laser diode thermal management nanoscale coating liquid cooling erosion and corrosion testing
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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