Formation of the uniform irradiation of a target in high-power laser facilities

The methods are developed for obtaining highly uniform laser beams for direct irradiation of targets in high-power laser facilities being designed. The methods are based on the optimisation of the mutual arrangement of the beams irradiating a target, the use of stationary phase plates for the format...

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Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2004-05, Vol.34 (5), p.427-446
Main Authors: Garanin, Sergey G, Derkach, Vladimir N, Shnyagin, Roman A
Format: Article
Language:English
Subjects:
07 ISOTOPES AND RADIATION SOURCES
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCURACY
BEAMS
DISTRIBUTION
IRRADIATION
LASER-PRODUCED PLASMA
LASERS
OPTIMIZATION
PHOTON BEAMS
PLASMA
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Derkach, Vladimir N
Shnyagin, Roman A
description The methods are developed for obtaining highly uniform laser beams for direct irradiation of targets in high-power laser facilities being designed. The methods are based on the optimisation of the mutual arrangement of the beams irradiating a target, the use of stationary phase plates for the formation of the specified radiation intensity distribution on the target, and the employment of the spatiotemporal beam smoothing to suppress small-scale inhomogeneities. The requirements on different systems of the facility are considered which provide the necessary accuracy of the beam steering on a target and the admissible difference in the intensities of the beams. A method is proposed for the spatiotemporal beam smoothing using the nonstationary properties of a laser plasma. The possibilities of this method are studied experimentally. (invited paper)
doi_str_mv 10.1070/QE2004v034n05ABEH002700
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subjects 07 ISOTOPES AND RADIATION SOURCES
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCURACY
BEAMS
DISTRIBUTION
IRRADIATION
LASER-PRODUCED PLASMA
LASERS
OPTIMIZATION
PHOTON BEAMS
PLASMA
title Formation of the uniform irradiation of a target in high-power laser facilities
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