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

    Research output: Contribution to journalArticle

    15 Citations (Scopus)

    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

    Fingerprint

    Pulse shaping
    Time measurement
    optical microscopes
    near fields
    Microscopes
    time measurement
    Group velocity dispersion
    probes
    compensators
    pulses
    group velocity
    time constant
    Optical fibers
    Nanostructures
    Gold
    optical fibers
    Pumps
    pumps
    gold

    ASJC Scopus subject areas

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

    Cite this

    Sub-20-fs time-resolved measurements in an apertured near-field optical microscope combined with a pulse-shaping technique. / Wu, Hui Jun; Nishiyama, Yoshio; Narushima, Tetsuya; Imura, Kohei; Okamoto, Hiromi.

    In: Applied Physics Express, Vol. 5, No. 6, 062002, 06.2012.

    Research output: Contribution to journalArticle

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