Efficient third-harmonic generation through tailored IR femtosecond laser pulse filamentation in air

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

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The process of third-harmonic generation during the filamentation of intense IR femtosecond laser pulses in air is investigated experimentally. It is shown that the introduction of a thin plasma string created by another femtosecond pulse, perpendicularly to the filament's path, dramatically reshapes the third-harmonic beam into a Bessel-like farfield distribution, while at the same time significantly enhances, up to 250 times, its conversion efficiency.

Original languageEnglish
Pages (from-to)3190-3194
Number of pages5
JournalOptics Express
Issue number5
Publication statusPublished - 2 Mar 2009
Externally publishedYes


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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