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Proceedings Paper

Multiwedge array for uniform target irradiation
Author(s): Masaru Iwasaki; Takahisa Jitsuno; Noriaki Nishi; Shinji Motokoshi; Masahiro Nakatsuka
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Paper Abstract

The effectiveness of multi-wedge plates array for the improvement of the laser irradiation uniformity on the pellet target in inertial confinement fusion has been investigated. A multi-wedge plates array of 90-mm in diameter was fabricated with wedge plates of 7 pairs, which ad a size of 30-mm diameter and a wedge angle of about 0.1 degrees. Also, to prevent the diffraction caused by each wedge plates, a soft aperture with the transmission profile of 16th super gaussian was designed and fabricated. As the result, it was confirmed that the array decreased the low- mode uniformity and is able to control the beam profile.

Paper Details

Date Published: 11 January 2000
PDF: 6 pages
Proc. SPIE 3886, High-Power Lasers in Energy Engineering, (11 January 2000); doi: 10.1117/12.375134
Show Author Affiliations
Masaru Iwasaki, Institute of Laser Engineering/ (Japan)
Takahisa Jitsuno, Institute of Laser Engineering/Osaka Univ. (Japan)
Noriaki Nishi, Usho Optical Systems Co., Ltd. (Japan)
Shinji Motokoshi, Institute for Laser Technology (Japan)
Masahiro Nakatsuka, Institute of Laser Engineering/Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 3886:
High-Power Lasers in Energy Engineering
Kunioki Mima; Gerald L. Kulcinski; William J. Hogan, Editor(s)

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