7 July 1998 Microscopic theory for the optical properties of Coulomb-correlated semiconductors
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Abstract
A nonequilibrium Green's functions approach is presented for the consistent computation of semiconductor quantum well optical spectra including strong Coulomb correlations within the coupled photon and carrier system. BetheSalpeter-like equations are given for the optical response and recombination rates in the excited medium. Bandstructure, quantum-confinement, many-body and cavity resonator effects are included in the microscopic approach. The theory is applied to the description of absorption/gain, luminescence, single and two-beam photoluminescence excitation spectroscopy for arbitrary temperatures and carrier densities. Numerical results, showing good agreement with recent experiments, are presented for ITT-V and Il-VI materials, from the linear regime, characterized by excitonic effects to the high density case in which a strongly interacting electron-hole plasma is proposed as the dominant mechanism. Keywords: Many-Body Effects; T-matrix; Bethe-Salpeter Equation; Nonlinear Absorption; Strongly-Correlated Electron-Hole Plasma; Coupled Valence-Band Multiple Quantum Wells.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mauro Fernandes Pereira and Klaus Henneberger "Microscopic theory for the optical properties of Coulomb-correlated semiconductors", Proc. SPIE 3283, Physics and Simulation of Optoelectronic Devices VI, (7 July 1998); doi: 10.1117/12.316660; https://doi.org/10.1117/12.316660
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