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論文

High-order harmonics from relativistic laser plasmas

Bulanov, S. V.; Esirkepov, T. Z.; Koga, J. K.; Pirozhkov, A. S.; 近藤 公伯; 神門 正城

Research Using Extreme Light; Entering New Frontiers with Petawatt-Class Lasers II (Proceedings of SPIE, Vol.9515), p.95150C_1 - 95150C_13, 2015/06

 被引用回数:0 パーセンタイル:0

High-order harmonic generation of high intensity ultra-short laser pulses by means of laser produced plasmas are discussed. Since with plasma targets there is no limitation on applicable laser intensity the generated harmonics can be substantially intense. Recent results of experiments and computer simulations on the high-order harmonic generation are briefly reviewed. Main attention is paid to the analysis of basic mechanisms of high-order harmonic generation from overdense and underdense plasma targets irradiated by relativistically intense laser pulses.

口頭

High-field sciences explored with the upgraded J-KAREN-P; Current status and perspective

神門 正城; Bulanov, S. V.; Esirkepov, T. Z.; 福田 祐仁; 林 由紀雄; 金崎 真聡; 桐山 博光; Koga, J. K.; 今 亮; 近藤 公伯; et al.

no journal, , 

The high field sciences, which is typically phenomena excited by intense lasers, are considered. Such interesting fields are rapidly growing due advances in laser technology. In our institute we are upgrading the Ti:sapphire laser system to $$sim$$ 1 petawatt including experimental system. We aim to achieve a focused intensity of 10$$^{22}$$ W/cm$$^2$$. Two pilot experiments, generation of $$>$$ 100 MeV protons and 1 keV coherent X-rays, are planned to demonstrate the usable, total performance of our new J-KAREN-P experimental system. Other possible experiments such as flying mirrors and $$gamma$$ ray flash are also discussed. In addition, we present the current status of the upgrade as well as future prospects.

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