Coherent phonon dynamics studied by impulsive stimulated Raman scattering

T. E. Stevens, J. Hebling, J. Kuhl, R. Merlin

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In the first part of this work, impulsive stimulated Raman scattering (ISRS) with tunable fs optical pulses is applied to investigate the mechanism of coherent phonon excitation in opaque materials. Comparison of theoretical values for the phonon-induced change in reflectivity as a function of photon energy in Sb with experimental data yields satisfactory agreement without the need to invoke other mechanisms of generation besides stimulated Raman scattering. In the second part, measurements of the phonon/polariton dephasing time in GaP for mode frequencies between 340 and 364 cm-1 are presented. The experimental data are well described by a classical oscillator fit assuming anharmonic interaction with acoustic combination modes.

Original languageEnglish
Pages (from-to)81-86
Number of pages6
JournalPhysica Status Solidi (B) Basic Research
Volume215
Issue number1
Publication statusPublished - Sep 1999

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Stimulated Raman scattering
Raman spectra
polaritons
Laser pulses
Photons
oscillators
reflectance
acoustics
photons
pulses
excitation
interactions
energy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Coherent phonon dynamics studied by impulsive stimulated Raman scattering. / Stevens, T. E.; Hebling, J.; Kuhl, J.; Merlin, R.

In: Physica Status Solidi (B) Basic Research, Vol. 215, No. 1, 09.1999, p. 81-86.

Research output: Contribution to journalArticle

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