### 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 language | English |
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Pages (from-to) | 742-751 |

Number of pages | 10 |

Journal | Journal of the Physical Society of Japan |

Volume | 44 |

Issue number | 3 |

Publication status | Published - 1978 Mar |

Externally published | Yes |

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### ASJC Scopus subject areas

- Physics and Astronomy(all)

### Cite this

*Journal of the Physical Society of Japan*,

*44*(3), 742-751.

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

Research output: Contribution to journal › Article

*Journal of the Physical Society of Japan*, vol. 44, no. 3, pp. 742-751.

}

TY - JOUR

T1 - Second order optical processes in a localized electron-phonon system- Transient response

AU - Takagahara, Toshihide

AU - Hanamisra, Eiichi

AU - Kubo, Ryogo

PY - 1978/3

Y1 - 1978/3

N2 - 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.

AB - 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.

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UR - http://www.scopus.com/inward/citedby.url?scp=23644440903&partnerID=8YFLogxK

M3 - Article

VL - 44

SP - 742

EP - 751

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 3

ER -