12 April 1996 Atoms in a superstrong laser field: towards subfemtosecond XUV sources
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Abstract
We present and explore an idea of creating a source of extremely short (10-15 s) coherent radiation tunable in the XUV wavelength range. The underlying physical mechanism consists in nonlinear properties of rapidly ionized atoms to efficiently convert the spectra of laser radiation in the 1015 - 1016 W/cm2 intensity range. We demonstrate that under certain conditions the nonlinear effects of high-order harmonic generation, spectrum broadening and blueshifting can be simultaneously engaged and favorably combined. This mechanism offers an attractive possibility to enter the attosecond duration range by optimizing the process of high-order harmonic excitation at the ionizing fronts of ultrashort laser pulses.
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Alexander M. Sergeev, Alexander M. Sergeev, A. V. Kim, A. V. Kim, Evgeny V. Vanin, Evgeny V. Vanin, D. Farina, D. Farina, M. Lontano, M. Lontano, Michael C. Downer, Michael C. Downer, } "Atoms in a superstrong laser field: towards subfemtosecond XUV sources", Proc. SPIE 2770, Laser Optics '95 and ICONO '95: Superintense Laser Fields, (12 April 1996); doi: 10.1117/12.238041; https://doi.org/10.1117/12.238041
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