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Many‐Body Effects in Resonantly Excited Dense Exciton Systems
Author(s) -
Schäfer W.,
Schuldt K.H.,
Treusch J.
Publication year - 1988
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221470229
Subject(s) - excited state , exciton , non equilibrium thermodynamics , physics , pulse (music) , nonlinear system , limit (mathematics) , resonance (particle physics) , laser , many body theory , atomic physics , condensed matter physics , quantum mechanics , mathematics , voltage , mathematical analysis
The nonlinear optical properties of semiconductors, which are excited by a strong laser pulse at the excitonic resonance are investigated. The concepts to describe the time‐evolution of the initially coherently excited system in the framework of a nonequilibrium Green's function theory are discussed in general. Numerical results are presented for a quasistationary limit and compared with recent experimental data.