@inproceedings{3eeb65f2311b4012935365a01e89e80c,
title = "Dynamics of LO phonons in InN studied by subpicosecond time-resolved Raman spectroscopy",
abstract = "Time-resolved Raman spectroscopy on a subpicosecond time scale has been used to study the phonon dynamics of both the A1(LO) and the E 1(LO) phonons in InN. From the temperature-dependence of their lifetimes, we demonstrate that both phonons decay primarily into a large wavevector TO phonon and a large wavevector TA/LA phonon consistent with the accepted phonon dispersion relationship for wurtzite InN. Their lifetimes have been found to decrease from 2.2 ps, at the low electron-hole pair density of 5×1017cm-3 to 0.25 ps, at the highest density of 2×1019cm-3. Our experimental findings demonstrate that carrier-density dependence of LO phonon lifetime is a universal phenomenon in polar semiconductors.",
keywords = "InN, Time-resolved Raman spectroscopy; LO phonon lifetimes",
author = "Kong-Thon Tsen and Kiang, {Juliann G.} and Ferry, {D. K.} and Hai Lu and Schaff, {William J.} and Lin, {Hon Way} and Shangjr Gwo",
year = "2008",
doi = "10.1117/12.762319",
language = "English (US)",
isbn = "9780819470676",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII",
note = "Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII ; Conference date: 20-01-2008 Through 23-01-2008",
}