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J. Phys. IV France 133 (2006) 615-620
The HALNA project: Diode-pumped solid-state laser for inertial fusion energyT. Kawashima1, 2, T. Ikegawa1, 2, J. Kawanaka1, N. Miyanaga1, M. Nakatsuka1, Y. Izawa1, O. Matsumoto2, R. Yasuhara2, T. Kurita2, T. Sekine2, M. Miyamoto2, H. Kan2, H. Furukawa3, S. Motokoshi3 and T. Kanabe4
1 Institute of Laser Enegineering, Osaka University, 2-6, Yamada-Oka, Suita 565-0871, Japan
2 Hamamatsu Photonics K.K., 5000 Hirakuchi, Hamamatsu 434-8601, Japan
3 Insutitute for Laser Technology, 1-8-4, Utsubo-Honmachi, Nishiku, Osaka 550-0004, Japan
4 University of Fukui, 3-9-1, Bunkyou, Fukui 910-8507, Japan
High-enery, rep.-rated, diode-pumped solid-state laser (DPSSL) is one of leading candidates for inertial fusion energy driver (IFE) and related laser-driven high-field applications. The project for the development of IFE laser driver in Japan, HALNA (High Average-power Laser for Nuclear Fusion Application) at ILE, Osaka University, aims to demonstrate 100-J pulse energy at 10 Hz rep. rate with 5 times diffraction limited beam quality. In this article, the advanced solid-state laser technologies for one half scale of HALNA (50 J, 10 Hz) are presented including thermally managed slab amplifier of Nd:phosphate glass and zig-zag optical geometry, and uniform, large-area diode-pumping.
© EDP Sciences 2006