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Proceedings Paper

400W Yb:YAG planar waveguide laser using novel unstable resonators
Author(s): Ian J. Thomson; Howard J. Baker; Krystian Wlodarczyk; Natalia Trela; Denis R. Hall
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Paper Abstract

A planar waveguide laser consisting of a 13mm x 12mm x 150μm Yb:YAG core with 1mm high sapphire claddings is edge pumped using two 450W diode stacks with custom aberration correcting phase-plates. A plano-concave resonator gives 400W average power in a low-order transverse, multi-longitudinal mode beam with 75% slope efficiency, comparable to other thin disk and slab lasers. Transverse beam quality is improved through use of novel mode selective toroidal laser-cut resonator mirrors, whilst lateral beam quality is improved through the use of an unstable resonator. Uniform gain with an amplification of 3-4 per pass shows promise for amplifier operation.

Paper Details

Date Published: 17 February 2010
PDF: 9 pages
Proc. SPIE 7578, Solid State Lasers XIX: Technology and Devices, 75780K (17 February 2010); doi: 10.1117/12.842128
Show Author Affiliations
Ian J. Thomson, Heriot-Watt Univ. (United Kingdom)
Howard J. Baker, Heriot-Watt Univ. (United Kingdom)
Krystian Wlodarczyk, Heriot-Watt Univ. (United Kingdom)
Natalia Trela, Heriot-Watt Univ. (United Kingdom)
Denis R. Hall, Heriot-Watt Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 7578:
Solid State Lasers XIX: Technology and Devices
W. Andrew Clarkson; Norman Hodgson; Ramesh K. Shori, Editor(s)

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