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Proceedings Paper

Development of high-average-power DPSSL with high beam quality
Author(s): Sadao Nakai; Tadashi Kanabe; Toshiyuki Kawashima; Masanobu Yamanaka; Yasukazu Izawa; Masahiro Nakatuka; Ranganathan Kandasamy; Hirofumi Kan; Teruo Hiruma; Masayuki Niino
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Paper Abstract

The recent progress of high power diode laser is opening new fields of laser and its application. We are developing high average power diode pumped solid state laser DPSSL for laser fusion power plant, for space propulsion and for various applications in industry. The common features or requirements of our High Average-power Laser for Nuclear-fusion Application (HALNA) are large pulse energy with relatively low repetition of few tens Hz, good beam quality of order of diffraction limit and high efficiency more than 10%. We constructed HALNA 10 (10J X 10 Hz) and tested the performance to clarify the scalability to higher power system. We have obtained in a preliminary experiment a 8.5 J output energy at 0.5 Hz with beam quality of 2 times diffraction limited far-field pattern.

Paper Details

Date Published: 16 August 2000
PDF: 11 pages
Proc. SPIE 4065, High-Power Laser Ablation III, (16 August 2000); doi: 10.1117/12.407358
Show Author Affiliations
Sadao Nakai, Osaka Univ. (Japan)
Tadashi Kanabe, Osaka Univ. (Japan)
Toshiyuki Kawashima, Hamamatsu Photonics K.K. (Japan)
Masanobu Yamanaka, Osaka Univ. (Japan)
Yasukazu Izawa, Osaka Univ. (Japan)
Masahiro Nakatuka, Osaka Univ. (Japan)
Ranganathan Kandasamy, Osaka Univ. (Japan)
Hirofumi Kan, Hamamatsu Photonics K.K. (Japan)
Teruo Hiruma, Hamamatsu Photonics K.K. (Japan)
Masayuki Niino, National Aerospace Lab. (Japan)

Published in SPIE Proceedings Vol. 4065:
High-Power Laser Ablation III
Claude R. Phipps, Editor(s)

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