Direct measurements of femtosecond energy dissipation processes of hot electrons in a gold film

Akihide Hibara, Tomohiro Morishita, Isao Tsuyumoto, Akira Harata, Takehiko Kitamori, Tsuguo Sawada

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    10 Citations (Scopus)

    Abstract

    Energy dissipation processes of hot electrons in a gold thin film were measured by a femtosecond time-resolved transient reflecting grating method. The processes were analyzed using the two-temperature model and the theory of the transient grating method. It was found that the electron-phonon coupling and thermal diffusion processes could be investigated independently. Temperature dependence of the electron-phonon coupling factor and the thermal conductivity was investigated quantitatively. The results suggested that the nonthermal states of hot electrons still contribute to the dissipation processes on time scales of several picoseconds.

    Original languageEnglish
    Pages (from-to)2983-2987
    Number of pages5
    JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
    Volume38
    Issue number5 A
    DOIs
    Publication statusPublished - 1999

    All Science Journal Classification (ASJC) codes

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

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