Toward 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. Varjú, F. Tavella, A. Marcinkevicius, F. Krausz, L. Veisz, G. D. Tsakiris

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25 Scopus citations

Abstract

We report on investigations of high-order harmonic generation from solid surfaces in the coherent wake emission regime with relativistically intense few-cycle (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 shot-to-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 laser-solid 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.

Original languageEnglish (US)
Pages (from-to)511-521
Number of pages11
JournalApplied Physics B: Lasers and Optics
Volume101
Issue number3
DOIs
StatePublished - Nov 1 2010
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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    Heissler, P., Hörlein, R., Stafe, M., Mikhailova, J. M., Nomura, Y., Herrmann, D., Tautz, R., Rykovanov, S. G., Földes, I. B., Varjú, K., Tavella, F., Marcinkevicius, A., Krausz, F., Veisz, L., & Tsakiris, G. D. (2010). Toward single attosecond pulses using harmonic emission from solid-density plasmas. Applied Physics B: Lasers and Optics, 101(3), 511-521. https://doi.org/10.1007/s00340-010-4281-6