Sub-20-fs time-resolved measurements in an apertured near-field optical microscope combined with a pulse-shaping technique

Hui Jun Wu, Yoshio Nishiyama, Tetsuya Narushima, Kohei Imura, Hiromi Okamoto

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    Abstract

    We have constructed an ultrafast near-field optical microscope system with near-field pump/probe pulses with a 17 fs duration at the probe tip. The dispersion effects arising from the optical components, especially from the optical fiber, were removed by a pulse-shaping system that consists of passive and adaptive group-velocity dispersion compensators. With this apparatus, we succeeded in measuring dephasing in a single gold nanostructure with a time constant on the order of 10 fs.

    Original languageEnglish
    Article number062002
    JournalApplied Physics Express
    Volume5
    Issue number6
    DOIs
    Publication statusPublished - 2012 Jun

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    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

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