Share Email Print
cover

Proceedings Paper

Microchannel heatsinks for high average power laser diode arrays
Author(s): William J. Benett; Barry L. Freitas; Raymond J. Beach; Dino R. Ciarlo; Verry Sperry; Brian J. Comaskey; Mark A. Emanuel; Richard W. Solarz; David C. Mundinger
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Detailed performance results and fabrication techniques for an efficient and low thermal impedance laser diode array heatsink are presented. High duty factor or even CW operation of fully filled laser diode arrays is 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 a photolithographic pattern definition procedure followed by anisotropic chemical etching. A modular rack-and-stack architecture is adopted for the heatsink design allowing arbitrarily large two-dimensional arrays to be fabricated and easily maintained. The excellent thermal control of the microchannel cooled heatsinks is ideally suited to pump array requirements for high average power crystalline lasers because of the stringent temperature demands that result from coupling the diode light to several nanometers wide absorption features characteristic of lasing ions in crystals.

Paper Details

Date Published: 26 June 1992
PDF: 13 pages
Proc. SPIE 1634, Laser Diode Technology and Applications IV, (26 June 1992); doi: 10.1117/12.59177
Show Author Affiliations
William J. Benett, Lawrence Livermore National Lab. (United States)
Barry L. Freitas, Lawrence Livermore National Lab. (United States)
Raymond J. Beach, Lawrence Livermore National Lab. (United States)
Dino R. Ciarlo, Lawrence Livermore National Lab. (United States)
Verry Sperry, Lawrence Livermore National Lab. (United States)
Brian J. Comaskey, Lawrence Livermore National Lab. (United States)
Mark A. Emanuel, Lawrence Livermore National Lab. (United States)
Richard W. Solarz, Lawrence Livermore National Lab. (United States)
David C. Mundinger, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 1634:
Laser Diode Technology and Applications IV
Daniel S. Renner, Editor(s)

© SPIE. Terms of Use
Back to Top