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Proceedings Paper

Phase front analysis of the 2TW HELEN Nd:glass laser
Author(s): Andrew R. Barnes; Thomas H. Bett; Christopher B. Edwards
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Paper Abstract

We report on the measurement of the output beam phase distribution of the high power, 30 cm aperture, Nd:glass laser HELEN using a self referencing cyclic radial shear interferometer. This near field interferometry technique for beam quality measurement is evaluated by comparison with measurements of the far-field intensity distribution. Results are also presented on the evolution of the thermal gradients and their effects on the transmitted wavefront quality through the final disc amplifiers following a laser shot.

Paper Details

Date Published: 20 November 1996
PDF: 7 pages
Proc. SPIE 2870, Third International Workshop on Laser Beam and Optics Characterization, (20 November 1996); doi: 10.1117/12.259886
Show Author Affiliations
Andrew R. Barnes, Atomic Weapons Establishment/Aldermaston (United Kingdom)
Thomas H. Bett, Atomic Weapons Establishment/Aldermaston (United Kingdom)
Christopher B. Edwards, Central Laser Facility/Rutherford Appleton Lab. (United Kingdom)

Published in SPIE Proceedings Vol. 2870:
Third International Workshop on Laser Beam and Optics Characterization
Michel Morin; Adolf Giesen, Editor(s)

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