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Interaction of two parallel femtosecond filaments at different wavelengths in air

  • East China Normal University

Research output: Contribution to journal › Article › peer-review

Abstract

We study the interaction of two parallel-launched femtosecond filaments at their fundamental-wave and second-harmonic frequencies in air. Besides the Kerr effect within the pulse duration, the impulsive alignment of the diatomic molecules in the fundamental-wave filament leads to controllable and field-free achievable attraction, fusion, or repulsion of the second-harmonic filament. The molecular-alignment-assisted filament interaction is further confirmed by the fluorescence intensity variation and spectral modulation of the second-harmonic filament at various molecular alignment revivals.

Original languageEnglish
Pages (from-to)3211-3213
Number of pages3
JournalOptics Letters
Volume34
Issue number20
DOIs
StatePublished - 15 Oct 2009
Externally publishedYes

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