High field sciences explored with high-peak-power lasers at JAEA

Kando, Masaki; Bulanov, S. V.; Esirkepov, T. Z.; Faenov, A.*; Fukuda, Yuji; Hayashi, Yukio; Kiriyama, Hiromitsu; Koga, J. K.; Kon, Akira; Kondo, Kiminori; Kotaki, Hideyuki; Mori, Michiaki; Morita, Toshimasa; Nakamura, Tatsufumi*; Nishiuchi, Mamiko; Ogura, Koichi; Pikuz, T.; Pirozhkov, A. S.; Sagisaka, Akito; Sakaki, Hironao; Yogo, Akifumi*

High-field sciences treat phenomena that are revealed or initiated by irradiating high electromagnetic fields on matter. In the relativistic interaction of an intense electromagnetic wave (laser) and plasma, specific density distributions such as electron density cusps or spikes can be generated. Such cusps are moving at nearly speed of light and can reflect an incoming laser pulse into short-wavelength, pulse-compressed radiation as if they work as relativistic mirrors. In the recent relativistic flying mirror experiment conducted at JAEA, we have observed quasi-monochromatic extreme ultraviolet (XUV) radiation. Finally, an on-going upgrade of the experimental system at KPSI, JAEA is presented.