Direct measurements of the lifetimes of longitudinal optical phonon modes and their dynamics in InN

Kong-Thon Tsen, Juliann G. Kiang, D. K. Ferry, Hai Lu, William J. Schaff, Hon Way Lin, Shangjr Gwo

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Abstract

Longitudinal optical phonons in InN have been studied by time-resolved Raman spectroscopy on a subpicosecond time scale. The lifetimes of both the A1(LO) and E1(LO) phonons have been directly measured. From the temperature dependence of their lifetimes, the authors demonstrate that both phonons decay primarily into a large wave vector TO phonon and a large wave vector TA/LA phonon, consistent with the accepted phonon dispersion relationship for wurtzite InN.

Original languageEnglish (US)
Article number152107
JournalApplied Physics Letters
Volume90
Issue number15
DOIs
StatePublished - Apr 24 2007

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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