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Open Access research with a European policy impact...

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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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Wavelength stabilization of extended-cavity tapered lasers with volume Bragg gratings

Lucas-Leclin, Gaëlle and Paboeuf, David and Georges, Patrick and Holm, Jesper and Andersen, Peter Eskil and Sumpf, Bernd and Erbert, Götz (2008) Wavelength stabilization of extended-cavity tapered lasers with volume Bragg gratings. Applied Physics B: Lasers and Optics, 91 (3-4). pp. 493-498. ISSN 0946-2171

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Abstract

The wavelength stabilization of high-brightness extended-cavity lasers at 810-nm by the use of volume Bragg gratings is described. Narrow linewidth (< 20 pm), high power (2.5 W) and good beam quality (M2<4) operation has been obtained in a robust and simple design. The impact of the beam focusing into the Bragg grating on the external cavity performance has been theoretically and experimentally investigated. Finally, second-harmonic generation of the infrared beam has been obtained in a ppKTP crystal, demonstrating a non-linear conversion efficiency of 0.8%/W and up to 8 mW at 405 nm.