Improvement of laser irradiation uniformity in GEKKO XII glass laser system

Noriaki Miyanaga; Shinjiro Matsuoka; Akinobu Ando; Kouji Tsubakimoto; Shinji Amano; Masahiro Nakatsuka; Tadashi Kanabe; Takahisa Jitsuno; Sadao Nakai

doi:10.1117/12.228321

8 December 1995 Improvement of laser irradiation uniformity in GEKKO XII glass laser system

Noriaki Miyanaga, Shinjiro Matsuoka, Akinobu Ando, Kouji Tsubakimoto, Shinji Amano, Masahiro Nakatsuka, Tadashi Kanabe, Takahisa Jitsuno, Sadao Nakai

Author Affiliations +

Proceedings Volume 2633, Solid State Lasers for Application to Inertial Confinement Fusion (ICF); (1995) https://doi.org/10.1117/12.228321
Event: Solid State Lasers for Application to Inertial Confinement Fusion (ICF), 1995, Monterey, CA, United States

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.

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Noriaki Miyanaga, Shinjiro Matsuoka, Akinobu Ando, Kouji Tsubakimoto, Shinji Amano, Masahiro Nakatsuka, Tadashi Kanabe, Takahisa Jitsuno, and Sadao Nakai "Improvement of laser irradiation uniformity in GEKKO XII glass laser system", Proc. SPIE 2633, Solid State Lasers for Application to Inertial Confinement Fusion (ICF), (8 December 1995); https://doi.org/10.1117/12.228321

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