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Nonlinear optics of semiconductor and molecular nanostructures : a common perspective

Title data

Axt, Vollrath M. ; Mukamel, Shaul:
Nonlinear optics of semiconductor and molecular nanostructures : a common perspective.
In: Reviews of Modern Physics. Vol. 70 (1998) Issue 1 . - pp. 145-174.
ISSN 1539-0756
DOI: https://doi.org/10.1103/RevModPhys.70.145

Project information

Project financing: Deutsche Forschungsgemeinschaft
The National Science Foundation, and the US Air Force office of scientific research

Abstract in another language

A unified microscopic theoretical framework for the calculation of optical excitations in molecular and semiconductor materials is presented. The hierarchy of many-body density matrices for a pair-conserving many-electron model and the Frenkel exciton model is rigorously truncated to a given order in the radiation field. Closed equations of motion are derived for five generating functions representing the dynamics up to third order in the laser field including phonon degrees of freedom as well as all direct and exchange-type contributions to the Coulomb interaction. By eliminating the phonons perturbatively the authors obtain equations that, in the case of the many-electron system, generalize the semiconductor Bloch equations, are particularly suited for the analysis of the interplay between coherent and incoherent dynamics including many-body correlations, and lead to thermalized exciton (rather than single-particle) distributions at long times. A complete structural equivalence with the Frenkel exciton model of molecular materials is established.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: excitons; biexcitons; phonons; dynamics controlled truncation; Semiconductors; molecular aggregates; Frenkel excitons; laser excitation; ultrafast dynamics; non-linear optics; correlated dynamics
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III > Chair Theoretical Physics III - Univ.-Prof. Dr. Martin Axt
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III
Result of work at the UBT: No
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 17 Oct 2017 08:36
Last Modified: 17 Oct 2017 08:36
URI: https://eref.uni-bayreuth.de/id/eprint/40028