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Open Access research with a European policy impact...

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 European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

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Self-starting femtosecond Cr4+:YAG laser mode locked with a GaInNAs saturable Bragg reflector

Leburn, C.G. and McRobbie, A.D. and Lagatsky, A.A. and Brown, C.T.A. and Sibbett, W. and Calvez, S. and Burns, D. and Dawson, M.D. and Gupta, J.A. and Aers, G.C. (2007) Self-starting femtosecond Cr4+:YAG laser mode locked with a GaInNAs saturable Bragg reflector. In: Advanced Solid State Photonics Conference, ASSP 2007, 2007-01-28 - 2007-01-31.

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Abstract

THE quaternary semiconductor system Ga In N As has been the subject of considerable recent interest. The ability to vary the nitrogen (N) and indium (In) concentrations permits the bandgap energy to be tailored for applications in the important 1200-1600 nm spectral region, via strong band-bowing, while controlling the lattice constant to permit pseudomorphic growth on a GaAs substrate [1]. GaInNAs is proven for light emission from vertical-cavity surface-emitting laser and vertical-external-cavity surface-emitting laser devices operating near 1300 nm [2]-[4], but it is also a potentially important material for developing saturable absorber devices. Of particular relevance are the saturable Bragg reflectors (SBRs) and semiconductor saturable absorbing mirrors for the passive mode-locking of near-infrared solid-state lasers operating in the 1200-1600 nm region.