Nanosecond pump-and-probe study of wurtzite GaN

T. Deguchi, T. Azuhata, Takayuki Sota, S. Chichibu, N. Sarukura, H. Ohtake, T. Yamanaka, S. Nakamura

    Research output: Contribution to journalArticle


    We present a nanosecond pump-and-probe optical study of wurtzite GaN under the excitation condition that the carrier-longitudinal optical phonon scattering does not contribute to the energy relaxation process. The delay time after which the isothermal condition is achieved is found to be ∼ 50 ns. This comes from both the phonon structure in GaN and the fact that the carrier cooling depends on excess kinetic energies of carriers.

    Original languageEnglish
    Pages (from-to)180-182
    Number of pages3
    JournalMaterials Science and Engineering B
    Issue number1-3
    Publication statusPublished - 1997 Dec 18



    • Gallium nitride
    • Isothermal region
    • Phonon structure
    • Pump-and-probe method

    ASJC Scopus subject areas

    • Materials Science(all)
    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

    Cite this

    Deguchi, T., Azuhata, T., Sota, T., Chichibu, S., Sarukura, N., Ohtake, H., Yamanaka, T., & Nakamura, S. (1997). Nanosecond pump-and-probe study of wurtzite GaN. Materials Science and Engineering B, 50(1-3), 180-182.