Second order optical processes in a localized electron-phonon system- Transient response

Toshihide Takagahara, Eiichi Hanamisra, Ryogo Kubo

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

The transient response of the second order optical process is studied for a localized electron-phonon system the stationary response of which was discussed in the preceding paper. We make use of the stochastic theory to project the dynamics of the whole lattice system onto the stochastic motion of the appropriately chosen relevant mode. The time-resolved emission spectrum is calculated for our model of vibrational relaxation which can be handled analytically. The time-dependent behaviors of various components of the secondary emission are clarified. The temporal characteristics of Raman (or Rayleigh) scattering components are determined by the phase memory time. On the other hand, the luminescence spectrum is composed of the ordinary and hot luminescence components. The characteristic time constant of the former is given by the radiative damping rate and that of the latter by the sum of the vibrational relaxation rate and the radiative damping rate.

Original languageEnglish
Pages (from-to)742-751
Number of pages10
JournalJournal of the Physical Society of Japan
Volume44
Issue number3
Publication statusPublished - 1978 Mar
Externally publishedYes

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transient response
molecular relaxation
damping
luminescence
electrons
secondary emission
Rayleigh scattering
time constant
emission spectra
Raman spectra

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Second order optical processes in a localized electron-phonon system- Transient response. / Takagahara, Toshihide; Hanamisra, Eiichi; Kubo, Ryogo.

In: Journal of the Physical Society of Japan, Vol. 44, No. 3, 03.1978, p. 742-751.

Research output: Contribution to journalArticle

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