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  • Formation of X-waves at fundamental and harmonics by infrared femtosecond pulse filamentation in air

    Author(s)
    Xu, Han
    Xiong, Hui
    Fu, Yuxi
    Yao, Jinping
    Zhou, Zenghui
    Cheng, Ya
    Xu, Zhizhan
    Chin, See Leang
    Griffith University Author(s)
    Xu, Han
    Year published
    2008
    Metadata
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    Abstract
    We experimentally observe the formation of X-waves at fundamental, third harmonic, and fifth harmonic wavelengths by infrared (central wavelength at ~ 1500 nm) femtosecond laser pulse filamentation in air. By fitting the angularly resolved spectra of the fundamental and harmonic waves using X-wave relations, we confirm that all the X-waves have nearly the same group velocity, indicating that they are locked in space and time during their propagation in filament.We experimentally observe the formation of X-waves at fundamental, third harmonic, and fifth harmonic wavelengths by infrared (central wavelength at ~ 1500 nm) femtosecond laser pulse filamentation in air. By fitting the angularly resolved spectra of the fundamental and harmonic waves using X-wave relations, we confirm that all the X-waves have nearly the same group velocity, indicating that they are locked in space and time during their propagation in filament.
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    Journal Title
    Applied Physics Letters
    Volume
    93
    Issue
    24
    DOI
    https://doi.org/10.1063/1.3050523
    Subject
    Nonlinear Optics and Spectroscopy
    Physical Sciences
    Engineering
    Technology
    Publication URI
    http://hdl.handle.net/10072/42466
    Collection
    • Journal articles

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