Radiative and non‐radiative transitions of electrons in local centers involving hot phonons

V. A. Kovaeskii, E. A. Popov, I. A. Chaikovskii

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


A theory of multi‐quantum radiative and non‐radiative (NRT) transitions in local centers under a high power laser radiation is presented. A model of local center having local phonons (LP) is used. When the interaction between the LP and the thermostat (crystal vibrations) is weak, the quantum transitions of electrons involving hot phonons result in a heating of the LP to an effective temperature Tv well above the equilibrium one. An explicit expression for Tv based on the method of nonequilibrium statistical operator is derived. The latter is determined self‐consistently in terms of quantum correlation functions, which contain standard multiphonon structures. This allows the shape function of absorption and NRT involving hot phonons to be found. In particular one displays the LP heating by means of a sharp asymmetry (flattening) of the absorption band and an essential activation of NRT.

Original languageEnglish
Pages (from-to)427-433
Number of pages7
Journalphysica status solidi (b)
Issue number2
StatePublished - 1 Jan 1975
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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