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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

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4W single transverse-mode VECSEL utilising intra-cavity diamond heat spreader

Harkonen, A. and Suomalainen, S. and Saarinen, E. and Orsila, L. and Koskinen, R. and Okhotnikov, O. and Calvez, S. and Dawson, M.D. (2006) 4W single transverse-mode VECSEL utilising intra-cavity diamond heat spreader. Electronics Letters, 42 (12). pp. 693-694. ISSN 0013-5194

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Abstract

An optically pumped semiconductor vertical external cavity surface emitting laser, with high output power and excellent beam quality operating at a wavelength near 1.05 mm, is reported. A transparent diamond heat spreader was used for thermal management of the laser.The gain structure grown by molecular beam epitaxy includes 13 compressively strained InGaAs quantum wells. Maximum output power of 4 W with diffraction-limited beam (M21.15) was achieved using a 2% output coupler and incident pump power of 20 W. It is shown that power scalability is feasible with the presented laser geometry.