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How Correlated Coulomb Quantum Kinetics Affects the Optical Phase of Four-Wave-Mixing Signals

Title data

Axt, Vollrath M. ; Bartels, G. ; Haase, B. ; Meinertz, J. ; Neukirch, U. ; Gutowski, J.:
How Correlated Coulomb Quantum Kinetics Affects the Optical Phase of Four-Wave-Mixing Signals.
In: Physica Status Solidi B. Vol. 221 (September 2000) Issue 1 . - pp. 205-209.
ISSN 0370-1972
DOI: https://doi.org/10.1002/1521-3951(200009)221:1<205::AID-PSSB205>3.0.CO;2-9

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

The optical phase of four-wave-mixing (FWM) signals from a ZnSe single quantum well is analyzed experimentally and theoretically. The focus is on excitation conditions where the polarization state of the emitted light is dynamically changing rather than being fixed by selection rules, a case known to be sensitive to high-order Coulomb correlations. The phase is measured using an iterative procedure taking as input FWM signals with real-time resolution as well as frequency regime data. The results are compared with a microscopical density-matrix description using the dynamics controlled truncation (DCT) scheme. Mean-field Coulomb interactions, Pauli blocking and transitions to biexcitons and the two-pair scattering continuum are accounted for. Calculations in the coherent limit are able to reproduce the measured phases. The correlated two-pair scattering continuum is shown to have a significant impact on the phase.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: Condensed matter physics (theoretical and experimental)
Keywords: excitons; multiwave mixing; optical correlation; 2-particle level; 4-particle correlations; detailed microscopic theory; dynamics controlled truncation; four-wave mixing; higher order exciton correlations; nonlinear optical response; semiconductors; two-pair continuum correlations; polarization dependence; phase measurement; Excitons; non-linear optics; ultrafast 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 14:19
Last Modified: 17 Oct 2017 14:54
URI: https://eref.uni-bayreuth.de/id/eprint/40048