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Proceedings Paper

Improvement of laser irradiation uniformity in GEKKO XII glass laser system
Author(s): Noriaki Miyanaga; Shinjiro Matsuoka; Akinobu Ando; Kouji Tsubakimoto; Shinji Amano; Masahiro Nakatsuka; Tadashi Kanabe; Takahisa Jitsuno; Sadao Nakai
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Paper Abstract

Several key technologies for uniform laser irradiation are reported. This paper includes the uniformity performance as a result of the introduction of the random phase plate, the partially coherent light, and the beam smoothing by spectral dispersion into the New Gekko XII glass laser system. Finally we summarize the overall irradiation uniformity on the spherical target surface by considering the power imbalance effect. The technologies developed for the beam smoothing and the power balance control enable us to achieve the irradiation nonuniformities of around 1% level for a foot pulse and of a few percent for a main drive pulse, respectively.

Paper Details

Date Published: 8 December 1995
PDF: 8 pages
Proc. SPIE 2633, Solid State Lasers for Application to Inertial Confinement Fusion (ICF), (8 December 1995); doi: 10.1117/12.228321
Show Author Affiliations
Noriaki Miyanaga, Osaka Univ. (Japan)
Shinjiro Matsuoka, Osaka Univ. (Japan)
Akinobu Ando, Osaka Univ. (Japan)
Kouji Tsubakimoto, Osaka Univ. (Japan)
Shinji Amano, Osaka Univ. (Japan)
Masahiro Nakatsuka, Osaka Univ. (Japan)
Tadashi Kanabe, Osaka Univ. (Japan)
Takahisa Jitsuno, Osaka Univ. (Japan)
Sadao Nakai, Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 2633:
Solid State Lasers for Application to Inertial Confinement Fusion (ICF)
Michel Andre; Howard T. Powell, Editor(s)

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