TITLE

Acoustic phonon generation in the picosecond dynamics of dense electron-hole plasmas in InGaAsP films

AUTHOR(S)
Wiesenfeld, Jay M.
PUB. DATE
July 1985
SOURCE
Applied Physics Letters;7/15/1985, Vol. 47 Issue 2, p143
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Oscillations superposed on transient transmission and reflection from submicron films of InGaAsP (E[sub g] = 0.96 eV) and GaAs excited by subpicosecond optical pulses have been observed. The oscillations are due to coherent acoustic phonon generation in the thin films. Values for the velocity of sound, and the band-gap variation due to hydrostatic pressure and the difference in acoustic deformation potentials between conduction and valence bands are determined by analyzing the period and magnitude of the oscillations.
ACCESSION #
9817817

 

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