Calculations of the A(1) phonon frequency in photoexcited tellurium

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Calculations of the A(1) phonon frequency in photoexcited tellurium

Tangney, P; Fahy, Stephen B.
Date: 1999
Copyright: © 1999, American Physical Society
Related: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.82.4340
Citation: Tangney, P. and Fahy, S. (1999) ' Calculations of the A(1) phonon frequency in photoexcited tellurium', Physical Review Letters, 82(21), 4340-4343 (4pp). doi: 10.1103/PhysRevLett.82.4340
Published Version: 10.1103/PhysRevLett.82.4340

Abstract:

Calculations of the A(1) phonon frequency in photoexcited tellurium are presented. The phonon frequency as a function of photoexcited carrier density and phonon amplitude is determined. Recent pump-probe experiments are interpreted in light of these calculations. It is proposed that, in conjunction with measurements of the phonon period in ultrafast pump-probe reflectivity experiments, the calculated frequency shifts can be used to infer the evolution of the density of photoexcited carriers on a subpicosecond time scale. (S0031-9007(99)09219-4).

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