title: Optical phonon dynamics of GaAs studied with time-resolved terahertz spectroscopy.
abstract: We investigate the reflection near the reststrahlen band of the optical phonon in bulk GaAs in the time domain, using time-resolved terahertz spectroscopy. We find that the dynamics of the reflection measured for GaAs differs strongly from the reflection dynamics that would be expected for a TO phonon with a frequency-independent dephasing time.
authors: Department of Physics, Rensselaer Polytechnic Institute, Troy, New York 12180, USA.
authors: G C
authors: GC
authors: Cho
authors: P Y
authors: PY
authors: Han
authors: X C
authors: XC
authors: Zhang
authors: H J
authors: HJ
authors: Bakker