Thermal management in vertical-external-cavity surface-emitting lasers: finite-element analysis of a heatspreader approach

Author

Kemp, Alan J. ; Valentine, Gareth J. ; Hopkins, John-Mark ; Hastie, Jennifer E. ; Smith, Scott A. ; Calvez, Stephane ; Dawson, Martin D. ; Burns, David

Author_Institution

Inst. of Photonics, Univ. of Strathclyde, Glasgow, UK

Volume

41

Issue

2

fYear

2005

Firstpage

148

Lastpage

155

Abstract

The use of crystalline heatspreaders to improve thermal management in optically pumped vertical-external-cavity surface-emitting lasers is studied via finite-element analysis. The required properties of a heatspreader are examined and the effect on heat flow is discussed, as are thermal lensing effects. The advantages of diamond heatspreaders are highlighted. The power-scaling potential is compared to other approaches. Heatspreaders are found to be promising, particularly for use with low thermal conductivity semiconductors.

Keywords

finite element analysis; heat transfer; laser cavity resonators; optical pumping; semiconductor device models; semiconductor lasers; surface emitting lasers; thermal conductivity; thermal lensing; C; crystalline heatspreaders; diamond heatspreaders; finite-element analysis; heat flow; heatspreader approach; low thermal conductivity semiconductors; optically pumped lasers; power-scaling potential; thermal lensing effects; thermal management; vertical-external-cavity surface-emitting lasers; Crystallization; Finite element methods; Heat pumps; Laser excitation; Optical pumping; Pump lasers; Surface emitting lasers; Thermal conductivity; Thermal management; Vertical cavity surface emitting lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2004.839706

Filename

1386470