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

Kemp, A. and Valentine, G.J. and Hopkins, J.M. and Hastie, J.E. and Smith, S.A. and Calvez, S. and Dawson, M.D. and Burns, D. (2005) Thermal management in vertical-external-cavity surface-emitting lasers: Finite-element analysis of a heatspreader approach. IEEE Journal of Quantum Electronics, 41 (2). pp. 148-155. ISSN 0018-9197

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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.