High-power DPSSL for laser fusion and its application to industry

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

doi:10.1117/12.414043

25 January 2001 High-power DPSSL for laser fusion and its application to industry

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

Author Affiliations +

Proceedings Volume 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference; (2001) https://doi.org/10.1117/12.414043
Event: XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, 2000, Florence, Italy

Abstract

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 ofour High Average-power Laser for Nuclear-fusion Application (HALNA) are large pulse energy with relatively low repetition of few tens Hz, good beam quality oforder of diffraction limit and high efficiency more than 10%. We constructed HALNA 10 (10J X 10Hz) and tested the performance to clarify the scalability to higher power system. We have obtained in a preliminary experiment a 8.5J output energy at 0.5Hz with bean quality of2 times diffraction limited far-field pattern. We are also trying to extend the laser technology of high peak power with low repetition to that of high averge power laser with high repetition or CW operation. The progress of power laser technology is now opening new fields of applications in science and industry. The flexibility and variety ofperformance are needed.

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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 "High-power DPSSL for laser fusion and its application to industry", Proc. SPIE 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (25 January 2001); https://doi.org/10.1117/12.414043

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KEYWORDS

Fusion energy

Laser welding

High power lasers

Glasses

Laser development

Neodymium

Pulsed laser operation

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