1 kW超級繰り返し高パルスエネルギーレーザーの開発動向

河仲 準二; 時田 茂樹; 椿本 幸治; 吉田 英次; 郭 晓杨; 李 朝阳; 藤岡 加奈; 森尾 登; 荻野 純平; 本越 伸二; 阪本 雅昭; 中田 芳樹; 安原 亮; 藤本 靖; 吉村 政志; 藤田 雅之; 宮永 憲明; 植田 憲一

doi:10.2184/lsj.46.10_576

Repeatable High Pulse Energy Laser with more than 1 kW Average Power

Junji KAWANAKA, Shigeki TOKITA, Koji TSUBAKIMOTO, Hidetsugu YOSHIDA, Xiaoyang GUO, Zhaoyang LI, Kana FUJIOKA, Noboru MORIO, Junpei OGINO, Shinji MOTOKOSHI, Masaaki SAKAMOTO, Yoshiki NAKATA, Ryo YASUHARA, Yasushi FUJIMOTO, Masashi YOSHIMURA, Masayuki FUJITA, Noriaki MIYANAGA, Ken-ichi UEDA

Author information

Junji KAWANAKA
Institute of Laser Engineering, Osaka University
Shigeki TOKITA
Institute of Laser Engineering, Osaka University
Koji TSUBAKIMOTO
Institute of Laser Engineering, Osaka University
Hidetsugu YOSHIDA
Institute of Laser Engineering, Osaka University
Xiaoyang GUO
Institute of Laser Engineering, Osaka University
Zhaoyang LI
Institute of Laser Engineering, Osaka University
Kana FUJIOKA
Institute of Laser Engineering, Osaka University
Noboru MORIO
Institute of Laser Engineering, Osaka University
Junpei OGINO
Institute of Laser Engineering, Osaka University
Shinji MOTOKOSHI
Institute for Laser Technology
Masaaki SAKAMOTO
Institute of Laser Engineering, Osaka University
Yoshiki NAKATA
Institute of Laser Engineering, Osaka University
Ryo YASUHARA
National Institute for Fusion Science
Yasushi FUJIMOTO
Chiba Institute of Technology
Masashi YOSHIMURA
Institute of Laser Engineering, Osaka University
Masayuki FUJITA
Institute for Laser Technology
Noriaki MIYANAGA
Institute for Laser Technology
Ken-ichi UEDA
University of Electro-Communications

Keywords: Ultra-intense laser, High power laser, Petawatt laser, Active mirror

JOURNAL FREE ACCESS

2018 Volume 46 Issue 10 Pages 576-

DOI https://doi.org/10.2184/lsj.46.10_576

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Abstract

Repetition rate of a petawatt-class laser using Ti:Sapphire and optical parametric amplification is limited by a high energy pump source. Increasing the repetition rate (average power), in addition to efficient heat removal from the laser material of the pump source, thermal distribution is a significant problem, which results in wavefront distortion. Active-mirror is one of the promising amplifiers due to its high heat removal and insensitivity to thermal wavefront distortion. A 10 J, 100 Hz, 1 kW active-mirror laser will be demonstrated in 2018‒2019 as a feasibility study for 100 J.

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