Nanosecond pump-and-probe study of wurtzite GaN

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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