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Proceedings Paper

Thermal resistance of etched-pillar vertical-cavity surface-emitting laser diodes
Author(s): Torsten Wipiejewski; Matthew G. Peters; D. Bruce Young; Brian Thibeault; Gregory A. Fish; Larry A. Coldren
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Paper Abstract

We discuss our measurements on thermal impedance and thermal crosstalk of etched-pillar vertical-cavity lasers and laser arrays. The average thermal conductivity of AlAs-GaAs Bragg reflectors is estimated to be 0.28 W/(cmK) and 0.35W/(cmK) for the transverse and lateral direction, respectively. Lasers with a Au-plated heat spreading layer exhibit a 50% lower thermal impedance compared to standard etched-pillar devices resulting in a significant increase of maximum output power. For an unmounted laser of 64 micrometer diameter we obtain an improvement in output power from 20 mW to 42 mW. The experimental results are compared with a simple analytical model showing the importance of heat sinking for maximizing the output power of vertical-cavity lasers.

Paper Details

Date Published: 29 March 1996
PDF: 12 pages
Proc. SPIE 2691, Optoelectronic Packaging, (29 March 1996); doi: 10.1117/12.236919
Show Author Affiliations
Torsten Wipiejewski, Univ. of California/Santa Barbara (United States)
Matthew G. Peters, Univ. of California/Santa Barbara (United States)
D. Bruce Young, Univ. of California/Santa Barbara (United States)
Brian Thibeault, Univ. of California/Santa Barbara (United States)
Gregory A. Fish, Univ. of California/Santa Barbara (United States)
Larry A. Coldren, Univ. of California/Santa Barbara (United States)

Published in SPIE Proceedings Vol. 2691:
Optoelectronic Packaging
Michael R. Feldman; Yung-Cheng Lee, Editor(s)

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