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Enhancement of photon number reflected by the relativistic flying mirror

Kando, Masaki; Pirozhkov, A. S.; Kawase, Keigo; Esirkepov, T. Z.; Fukuda, Yuji; Kiriyama, Hiromitsu; Okada, Hajime; Daito, Izuru; Kameshima, Takashi; Hayashi, Yukio; Kotaki, Hideyuki; Mori, Michiaki; Koga, J. K.; Daido, Hiroyuki; Faenov, A. Y.; Pikuz, T.*; Ma, J.*; Chen, L. M.*; Ragozin, E. N.*; Kawachi, Tetsuya; Kato, Yoshiaki ; Tajima, Toshiki; Bulanov, S. V.

Laser light reflection by a relativistically moving electron density modulation (flying mirror) in a wake wave generated in a plasma by a high intense laser pulse is investigated experimentally. A counter-propagating laser pulse is reflected and up shifted in frequency with a multiplication factor of 37-66, corresponding to the extreme ultraviolet wavelength. The demonstrated flying mirror reflectivity (from 3$$times$$10$$^{-6}$$ to 2$$times$$10$$^{-5}$$, and from 1.3$$times$$10$$^{-4}$$ to 0.6$$times$$10$$^{-3},$$ for the photon number and pulse energy, respectively) is close to the theoretical estimate for the parameters of experiment.



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Category:Physics, Multidisciplinary



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