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"Towards single attosecond pulses using
harmonic emission from solid density plasmas" P. Heissler, R. Hörlein, M. Stafe, J. M. Mikhailova, Y. Nomura, D. Herrmann, R. Tautz , S. G. Rykovanov, I. B. Földes, K. Varju, F. Tavella, A. Marcinkevicius, F. Krausz, L. Veisz, G. D. TsakirisApplied Physics B 101, 511 - 521 (2010). Abstract: We report on investigations of high-order harmonic generation from solid surfaces in the coherent wake emission regime with relativistically intense fewcycle (8 fs) laser pulses. Significant spectral broadening compared to previous experiments with many-cycle pulses and the appearance of substructures on the harmonics are observed that strongly fluctuate from shotto-shot. Measurements in which the linear polarization was rotated or ellipticity of the laser pulse was varied exhibit a strong dependence of the harmonic emission on the polarization state of the incident pulse. We show that the observed spectral features are ultimately connected to the sub-cycle electron dynamics in the lasersolid interaction and thus proof of the few-cycle nature of the observed harmonic emission. Using a simple model we have investigated the factors that play an important role in the shape of the emitted spectrum. This publication has not been written at BMO BMO authors (in alphabetic order): Daniel Herrmann |
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Letzte Änderung: 2016-09-14 13:34
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