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Title: Microchannel cooled heatsinks for high average power laser diode arrays

Abstract

Detailed performance results for an efficient and low impedance laser diode array heatsink are presented. High duty factor and even cw operation of fully filled laser diode arrays at high stacking densities are enabled at high average power. Low thermal impedance is achieved using a liquid coolant and laminar flow through microchannels. The microchannels are fabricated in silicon using an anisotropic chemical etching process. A modular rack-and-stack architecture is adopted for heatsink design, allowing arbitrarily large two-dimensional arrays to be fabricated and easily maintained. The excellent thermal control of the microchannel heatsinks is ideally suited to pump army requirements for high average power crystalline laser because of the stringent temperature demands are required to efficiently couple diode light to several-nanometer-wide absorption features characteristic of lasing ions in crystals.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
7368767
Report Number(s):
UCRL-JC-112678; CONF-930159-42
ON: DE93016533
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: OE/LASE '93: International Society for Optical Engineering (SPIE) conference, Los Angeles, CA (United States), 16-23 Jan 1993
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; HEAT SINKS; COOLING; SEMICONDUCTOR LASERS; ETCHING; SILICON; THERMAL ANALYSIS; ELEMENTS; LASERS; SEMICONDUCTOR DEVICES; SEMIMETALS; SINKS; SOLID STATE LASERS; SURFACE FINISHING; 426002* - Engineering- Lasers & Masers- (1990-)

Citation Formats

Bennett, W J, Freitas, B L, Ciarlo, D, Beach, R, Sutton, S, Emanuel, M, and Solarz, R. Microchannel cooled heatsinks for high average power laser diode arrays. United States: N. p., 1993. Web.
Bennett, W J, Freitas, B L, Ciarlo, D, Beach, R, Sutton, S, Emanuel, M, & Solarz, R. Microchannel cooled heatsinks for high average power laser diode arrays. United States.
Bennett, W J, Freitas, B L, Ciarlo, D, Beach, R, Sutton, S, Emanuel, M, and Solarz, R. 1993. "Microchannel cooled heatsinks for high average power laser diode arrays". United States.
@article{osti_7368767,
title = {Microchannel cooled heatsinks for high average power laser diode arrays},
author = {Bennett, W J and Freitas, B L and Ciarlo, D and Beach, R and Sutton, S and Emanuel, M and Solarz, R},
abstractNote = {Detailed performance results for an efficient and low impedance laser diode array heatsink are presented. High duty factor and even cw operation of fully filled laser diode arrays at high stacking densities are enabled at high average power. Low thermal impedance is achieved using a liquid coolant and laminar flow through microchannels. The microchannels are fabricated in silicon using an anisotropic chemical etching process. A modular rack-and-stack architecture is adopted for heatsink design, allowing arbitrarily large two-dimensional arrays to be fabricated and easily maintained. The excellent thermal control of the microchannel heatsinks is ideally suited to pump army requirements for high average power crystalline laser because of the stringent temperature demands are required to efficiently couple diode light to several-nanometer-wide absorption features characteristic of lasing ions in crystals.},
doi = {},
url = {https://www.osti.gov/biblio/7368767}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 15 00:00:00 EST 1993},
month = {Fri Jan 15 00:00:00 EST 1993}
}

Conference:
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