Title :
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
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;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2004.839706
