Generation of ENergetic Beam Ultimate (GENBU) Laser - Main Laser -

Junji KAWANAKA; Koichi YAMAKAWA; Koji TSUBAKIMOTO; Tadashi KANABE; Toshiyuki KAWASHIMA; Hitoshi NAKANO; Minoru YOSHIDA; Takagimi YANAGITANI; Fumihiko YAMAMURA; Masayuki FUJITA; Yoshikazu SUZUKI; Noriaki MIYANAGA; Yasukazu IZAWA

doi:10.2184/lsj.36.1056

Lasers and Laser Systems

Generation of ENergetic Beam Ultimate (GENBU) Laser - Main Laser -

Junji KAWANAKA, Koichi YAMAKAWA, Koji TSUBAKIMOTO, Tadashi KANABE, Toshiyuki KAWASHIMA, Hitoshi NAKANO, Minoru YOSHIDA, Takagimi YANAGITANI, Fumihiko YAMAMURA, Masayuki FUJITA, Yoshikazu SUZUKI, Noriaki MIYANAGA, Yasukazu IZAWA

Author information

Junji KAWANAKA
Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871
Koichi YAMAKAWA
Japan Atomic Energy Agency, Kansai Photon Science Institute, 8-1 Umemi-dai, Kizugawa, Kyoto 619-0215
Koji TSUBAKIMOTO
Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871
Tadashi KANABE
Fukui University, 3-9-1 Bunkyo, Fukui, Fukui 910-8507
Toshiyuki KAWASHIMA
Hamamatsu Photonics K. K., 5000 Hirakuchi, Hamakita-ku, Hamamatsu, Shizuoka 434-8601
Hitoshi NAKANO
Kinki University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502
Minoru YOSHIDA
Kinki University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502
Takagimi YANAGITANI
Konoshima Chemical Co., Ltd., 80 Koda, TakumaCho, Mitoyo-City, Kagawa 769-1103
Fumihiko YAMAMURA
Showa Optronics Co., Ltd., 22-1, 1-chome, Hakusan, Midori-ku, Yokohama, Kanagawa 226-0006
Masayuki FUJITA
Institute for Laser Technology, 2-6 Yamadaoka, Suita, Osaka 565-0871
Yoshikazu SUZUKI
Omron Laserfront Inc., 1120 Shimokuzawa, Sagamihara, Kanagawa 229-1198
Noriaki MIYANAGA
Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871
Yasukazu IZAWA
Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871

Keywords: High Power Laser, Cryogenic Laser Material, Yb:YAG, DPSSL, Fusion Reactor Driver

JOURNAL FREE ACCESS

2008 Volume 36 Issue APLS Pages 1056-1058

DOI https://doi.org/10.2184/lsj.36.1056

Details

Abstract

A new diode-pumped laser fusion driver has been conceptually designed at 16-Hz repetition rate, 17% electrical-optical efficiency and less than 3000-m³ main amplifier size. Output power is 1.2 MJ for a blue compression laser and 0.1 MJ for a heating laser. 1-kJ pulse energy in near infrared is a basic unit to obtain such megajoules energy. We have proposed two new technologies into the system. One is cryogenic Yb:YAG ceramics as a laser material. The other is a large-aperture active-mirror as amplifier architecture. Recently, 1-kJ laser system "GENBU" has been designed in details with these technologies as a milestone for the new driver. A 1-J system "GENBU-Kid" is under construction for power-scaling up to 1 kJ.

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