Influence of spatiotemporal coupling induced by an ultrashort laser pulse shaper on a focused beam profile

Takasumi Tanabe, Fumihiko Kannari, Frank Korte, Jürgen Koch, Boris Hichkov

    Research output: Contribution to journalArticle

    21 Citations (Scopus)

    Abstract

    4f pulse shapers have been widely used to temporally manipulate femtosecond optical pulses by spectral filtering. When the temporal waveform is manipulated with a spatial light modulator consisting of segmented pixels, the spatial profile of the output beam also varies because of diffraction at the pixel array, which is known as a spatiotemporal coupling effect. This effect produces a complicated spatio-temporal profile near the focus of the ultrashort pulses, which may affect the interpretation of experimental results obtained with shaped ultrashort pulses. We investigate the spatial intensity distribution at the focus of temporally shaped pulses through ablation experiments. The three-dimensional space-time beam profile is also numerically calculated.

    Original languageEnglish
    Pages (from-to)1092-1098
    Number of pages7
    JournalApplied Optics
    Volume44
    Issue number6
    DOIs
    Publication statusPublished - 2005 Feb 20

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics
    • Engineering (miscellaneous)
    • Electrical and Electronic Engineering

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