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

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8 Author(s)
Kemp, A.J. ; Inst. of Photonics, Univ. of Strathclyde, Glasgow, UK ; Valentine, G.J. ; Hopkins, J.-M. ; Hastie, J.E.
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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.

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Quantum Electronics, IEEE Journal of  (Volume:41 ,  Issue: 2 )