Optical phonon dynamics of GaAs studied with time-resolved terahertz spectroscopy.
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.
Cho
G C
GC
Department of Physics, Rensselaer Polytechnic Institute, Troy, New York 12180, USA.
Han
P Y
PY
Zhang
X C
XC
Bakker
H J
HJ