Development of high-power DPSSL for inertial fusion energy

Yasukazu Izawa; Masanobu Yamanaka; Tadashi Kanabe; Hiroki Matsui; Yasuo Kawada; Ranganathan Kandasamy; Takeyoshi Eguchi; Masahiro Nakatsuka; Sadao Nakai; Takayuki Kawashima; Yasumitsu Okada; Takeshi Kanzaki; Hirofumi Miyajima; Masahiro Miyamoto; Hirofumi Kan

doi:10.1117/12.375156

11 January 2000 Development of high-power DPSSL for inertial fusion energy

Yasukazu Izawa, Masanobu Yamanaka, Tadashi Kanabe, Hiroki Matsui, Yasuo Kawada, Ranganathan Kandasamy, Takeyoshi Eguchi, Masahiro Nakatsuka, Sadao Nakai, Takayuki Kawashima, Yasumitsu Okada, Takeshi Kanzaki, Hirofumi Miyajima, Masahiro Miyamoto, Hirofumi Kan

Author Affiliations +

Proceedings Volume 3886, High-Power Lasers in Energy Engineering; (2000) https://doi.org/10.1117/12.375156
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan

Abstract

We have conceptually designed a diode-pumped Nd:glass slab amplifier module for Inertial Fusion Energy (IFE). As a first step of a driver development, we have been developing a diode-pumped zig-zag Nd:glass slab laser amplifier system which can generate an output energy of 10 J per pulse at 1053 nm in 10 Hz operation. The water-cooled zig-zag Nd: glass slab is pumped for both sides by 803-nm AlGaAs laser- diode (LD) module; each LD module has an emitting area of 420 mm X 10 mm and two LD modules generated in total 200kW peak power with 2.5kW/cm² peak intensity at 10 Hz repetition rate. We have obtained in a preliminary experiment a 8.5 J output energy at 0.5 Hz with a beam quality of 2 times diffraction limited far-field pattern.

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Yasukazu Izawa, Masanobu Yamanaka, Tadashi Kanabe, Hiroki Matsui, Yasuo Kawada, Ranganathan Kandasamy, Takeyoshi Eguchi, Masahiro Nakatsuka, Sadao Nakai, Takayuki Kawashima, Yasumitsu Okada, Takeshi Kanzaki, Hirofumi Miyajima, Masahiro Miyamoto, and Hirofumi Kan "Development of high-power DPSSL for inertial fusion energy", Proc. SPIE 3886, High-Power Lasers in Energy Engineering, (11 January 2000); https://doi.org/10.1117/12.375156

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KEYWORDS

Amplifiers

Fusion energy

Glasses

Neodymium

Diffraction

Semiconductor lasers

Laser amplifiers

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