Filamentation-induced third-harmonic generation in air via plasma-enhanced third-order susceptibility

S. Suntsov, D. Abdollahpour, D. G. Papazoglou, Stylianos Tzortzakis

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We study, both experimentally and theoretically, the underlying physics of third-harmonic generation in air by a filamented infrared femtosecond laser pulse propagating through a thin plasma channel. It is shown that the recently observed more than two-order-of-magnitude increase of the efficiency of third-harmonic generation occurs due to the plasma-enhanced third-order susceptibility. An estimate of the effective value of this susceptibility is given.

Original languageEnglish
Article number033817
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number3
Publication statusPublished - 10 Mar 2010
Externally publishedYes


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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