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Proceedings Paper

Application of static phase control elements to high-power solid state lasers
Author(s): Thomas H. Bett; Andrew R. Barnes; N. W. Hopps; Mohammad R. Taghizadeh; Andrew J. Waddie; P. Rudman; M. Thompson
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Paper Abstract

We describe development of passive phase correction elements to compensate for static phase errors and prompt thermally induced aberrations in the reconfigured HELEN laser. Partial compensation of cooling effects is also included in the design. Phase elements have been fabricated through lithographic processes using amplitude masks. The masks were generated from measured laser wavefronts. The phase profiles have been measured experimentally and the effect on the HELEN laser wavefront and far field intensity distribution have been calculated by combining these phase profiles with the measured laser wavefronts. The calculations show improvements in Strehl ratio from a factor of 2 up to a factor of 7 depending on the configuration.

Paper Details

Date Published: 24 April 2001
PDF: 15 pages
Proc. SPIE 4270, Laser Resonators IV, (24 April 2001); doi: 10.1117/12.424672
Show Author Affiliations
Thomas H. Bett, Atomic Weapons Establishment plc (United Kingdom)
Andrew R. Barnes, Atomic Weapons Establishment plc (United Kingdom)
N. W. Hopps, Atomic Weapons Establishment plc (United Kingdom)
Mohammad R. Taghizadeh, Heriot-Watt Univ. (United Kingdom)
Andrew J. Waddie, Heriot-Watt Univ. (United Kingdom)
P. Rudman, Heriot-Watt Univ. (United Kingdom)
M. Thompson, Heriot-Watt Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 4270:
Laser Resonators IV
Alexis V. Kudryashov; Alan H. Paxton, Editor(s)

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