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Microchip vertical-external cavity surface-emitting laser using a concave-shaped diamond micromirror

Laurand, N. and Lee, C.L. and Gu, E. and Hastie, J.E. and Calvez, S. and Dawson, M.D. and Suomalainen, S. and Guina, M. and Okhotnikov, O. and Pessa, M. and Giet, S. (2007) Microchip vertical-external cavity surface-emitting laser using a concave-shaped diamond micromirror. In: European conference on Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. IEEE, p. 1. ISBN 978-1-4244-0931-0

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Abstract

This paper demonstrates a plano-concave microchip vertical-external cavity emitting laser (mu-VECSEL) operating at 1.05 mum. The cavity is composed of a semiconductor structure, comprising an active region grown on top of a distributed Bragg reflector (DBR), and a diamond heatspreader with its outer surface shaped as a spherical microlens. This stable optical cavity has a signal spot diameter of ~19.8 mum on the active region and of ~21 mum at the concave micro-mirror facet.