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Optical phonon dynamics of GaAs studied with time-resolved terahertz spectroscopy

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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.

© 2000 Optical Society of America

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