Efficient Fusion Neutron Generation Using a 10-TW High-Repetition Rate Diode-Pumped Laser

• KITAGAWA Yoneyoshi

  The Graduate School for the Creation of New Photonics Industries, 1955-1 Kurematsu-cho, Nishi-ku, Hamamatsu 431-1202, Japan

• MORI Yoshitaka

  The Graduate School for the Creation of New Photonics Industries, 1955-1 Kurematsu-cho, Nishi-ku, Hamamatsu 431-1202, Japan

• HANAYAMA Ryohei

  The Graduate School for the Creation of New Photonics Industries, 1955-1 Kurematsu-cho, Nishi-ku, Hamamatsu 431-1202, Japan

• OKIHARA Shinichiro

  The Graduate School for the Creation of New Photonics Industries, 1955-1 Kurematsu-cho, Nishi-ku, Hamamatsu 431-1202, Japan

• FUJITA Kazuhisa

  The Graduate School for the Creation of New Photonics Industries, 1955-1 Kurematsu-cho, Nishi-ku, Hamamatsu 431-1202, Japan

• ISHII Katsuhiro

  The Graduate School for the Creation of New Photonics Industries, 1955-1 Kurematsu-cho, Nishi-ku, Hamamatsu 431-1202, Japan

• KAWASHIMA Toshiyuki

  Development Bureau, Hamamatsu Photonics K.K., 1820 Kurematsu-cho, Nishi-ku, Hamamatsu 431-1202, Japan

• SATO Nakahiro

  Development Bureau, Hamamatsu Photonics K.K., 1820 Kurematsu-cho, Nishi-ku, Hamamatsu 431-1202, Japan

• SEKINE Takashi

  Development Bureau, Hamamatsu Photonics K.K., 1820 Kurematsu-cho, Nishi-ku, Hamamatsu 431-1202, Japan

• YASUHARA Ryo

  Development Bureau, Hamamatsu Photonics K.K., 1820 Kurematsu-cho, Nishi-ku, Hamamatsu 431-1202, Japan

• TAKAGI Masaru

  Development Bureau, Hamamatsu Photonics K.K., 1820 Kurematsu-cho, Nishi-ku, Hamamatsu 431-1202, Japan

• NAKAMURA Naoki

  Advanced Material Engineering Div., TOYOTA Motor Corporation, 1200 Mishuku, Susono 410-1193, Japan

• MIYAMOTO Yasushi

  Advanced Material Engineering Div., TOYOTA Motor Corporation, 1200 Mishuku, Susono 410-1193, Japan

• AZUMA Hirozumi

  TOYOTA Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute-cho, Aichi 480-1192, Japan

• MOTOHIRO Tomoyoshi

  TOYOTA Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute-cho, Aichi 480-1192, Japan

• HIOKI Tatsumi

  TOYOTA Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute-cho, Aichi 480-1192, Japan

• KAN Hirofumi

  Development Bureau, Hamamatsu Photonics K.K., 1820 Kurematsu-cho, Nishi-ku, Hamamatsu 431-1202, Japan

Abstract

The first use of a high-repetition-rate laser-diode (LD)-pumped laser in a fusion target experiment is demonstrated. An LD-pumped Nd-solid state laser's output is coupled to a Ti:sapphire laser, enabling the resulting HAMA laser to generate 2-J, 815-nm-wavelength output with a pulse width of 150 fs and a repetition rate of 10 Hz. A photon-to-photon efficiency of 1.25% (electric-to-photonic 0.7%) is achieved, which is an order of magnitude higher than that of current flash-lamp lasers. Irradiation of a 500-µm-thick deuterated polystyrene film by a 0.6-J pulse yielded 10⁵ DD fusion neutrons. The efficiency from the electric input to the neutron yield is 10 times higher than the flash-lamp-pumped table-top lasers.

Journal

• Plasma and Fusion Research

  Plasma and Fusion Research 6 1306006-1306006, 2011

  The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

• laser-diode(LD)- pumped laser
• ICF roadmap
• DD fusion neutron
• neutron source

Details

• CRID: 1390001205255981056
• NII Article ID: 130000903675
• DOI: 10.1585/pfr.6.1306006
• ISSN: 18806821
• Web Site: http://www.jstage.jst.go.jp/article/pfr/6/0/6_0_1306006/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed