Development of high-average-power DPSSL with high beam quality

Sadao Nakai; Tadashi Kanabe; Toshiyuki Kawashima; Masanobu Yamanaka; Yasukazu Izawa; Masahiro Nakatuka; Ranganathan Kandasamy; Hirofumi Kan; Teruo Hiruma; Masayuki Niino

doi:10.1117/12.407358

16 August 2000 Development of high-average-power DPSSL with high beam quality

Sadao Nakai, Tadashi Kanabe, Toshiyuki Kawashima, Masanobu Yamanaka, Yasukazu Izawa, Masahiro Nakatuka, Ranganathan Kandasamy, Hirofumi Kan, Teruo Hiruma, Masayuki Niino

Author Affiliations +

Proceedings Volume 4065, High-Power Laser Ablation III; (2000) https://doi.org/10.1117/12.407358
Event: High-Power Laser Ablation, 2000, Santa Fe, NM, United States

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.

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Sadao Nakai, Tadashi Kanabe, Toshiyuki Kawashima, Masanobu Yamanaka, Yasukazu Izawa, Masahiro Nakatuka, Ranganathan Kandasamy, Hirofumi Kan, Teruo Hiruma, and Masayuki Niino "Development of high-average-power DPSSL with high beam quality", Proc. SPIE 4065, High-Power Laser Ablation III, (16 August 2000); https://doi.org/10.1117/12.407358

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