Microscopic theory for the optical properties of Coulomb-correlated semiconductors

M. F. Pereira, K. Henneberger

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

A nonequilibrium Green's functions approach is presented for the consistent computation of semi-conductor quantum well optical spectra including strong Coulomb correlations within the coupled photon and carrier system. Bethe-Salpeter-like equations are given for the optical response and recombination rates in the excited medium. Band structure, 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 III-V and II-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.

Original languageBritish English
Pages (from-to)477-491
Number of pages15
JournalPhysica Status Solidi (B) Basic Research
Volume206
Issue number1
DOIs
StatePublished - Mar 1998

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