Transient Polarization Effects of Resonance Raman Scattering in a Linearly-Coupled Localized-Electron Phonon System

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  • Aihara Masaki
    Department of Physics, Faculty of Liberal Arts, Yamaguchi University

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  • Transient Polarization Effects of Reson

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Abstract

We investigate the time-dependent polarization characteristics associated with resonance Raman scattering in a linearly-coupled localized-electron phonon system with a doubly-degenerate excited electronic level. It is found that the temporal polarization behavior for the pulse excitation strongly reflects the dynamics of the electron-phonon interaction in the intermediate state. In the case of a short pulse limit, the time-dependent degree of polarization (DP) exhibits the damped oscillation which is directly related to the dynamical motion of the interaction mode. For a square pulse with a finite pulse width, the interference effect between the scattering and the luminescence appears in the oscillatory behavior of DP during the excitation, and strongly depends on the incident photon energy.

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