Nanosecond pump-and-probe study of wurtzite GaN

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

Research output: Contribution to journalArticle

Abstract

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
Volume50
Issue number1-3
DOIs
Publication statusPublished - 1997 Dec 18

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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    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. https://doi.org/10.1016/S0921-5107(97)00159-1