Multiwedge array for uniform target irradiation

Masaru Iwasaki; Takahisa Jitsuno; Noriaki Nishi; Shinji Motokoshi; Masahiro Nakatsuka

doi:10.1117/12.375134

11 January 2000 Multiwedge array for uniform target irradiation

Masaru Iwasaki, Takahisa Jitsuno, Noriaki Nishi, Shinji Motokoshi, Masahiro Nakatsuka

Proceedings Volume 3886, High-Power Lasers in Energy Engineering; (2000) https://doi.org/10.1117/12.375134
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan

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.

Citation Download Citation

Masaru Iwasaki, Takahisa Jitsuno, Noriaki Nishi, Shinji Motokoshi, and Masahiro Nakatsuka "Multiwedge array for uniform target irradiation", Proc. SPIE 3886, High-Power Lasers in Energy Engineering, (11 January 2000); https://doi.org/10.1117/12.375134

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