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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 Strathclyde researchers, including by researchers from the Physical Activity for Health Group based within the School of Psychological Sciences & Health. Research here seeks to better understand how and why physical activity improves health, gain a better understanding of the amount, intensity, and type of physical activity needed for health benefits, and evaluate the effect of interventions to promote physical activity.

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High-power vertical external-cavity surface-emitting lasers

Hopkins, J.M. and Calvez, S. and Kemp, A. and Hastie, J.E. and Smith, S.A. and MacLean, A.J. and Burns, D. and Dawson, M.D. (2006) High-power vertical external-cavity surface-emitting lasers. Physica Status Solidi C, 3 (3). pp. 380-385. ISSN 1862-6351

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Abstract

Recently multiwatt power levels have been generated from Vertical External-Cavity Surface-Emitting Lasers in high quality spatially symmetric output beams. While these results are very impressive for a high brightness semiconductor source, they have largely been achieved in a wavelength band already well served by conventional solid-state lasers. To fully realise the potential of this technology, the wavelength versatility offered by the semiconductor materials must be utilized. Significant power scaling at wavelengths away from 1µm is a key technical challenge for the VECSEL developer.