Interaction-induced effects in the nonlinear coherent response of quantum-well excitons

Wagner, H. P. and Schaetz, A. and Langbein, W. and Hvam, J. M. and Smirl, A. L. (1999) Interaction-induced effects in the nonlinear coherent response of quantum-well excitons. PHYSICAL REVIEW B, 60 (7). pp. 4454-4457. ISSN 1098-0121, 1550-235X

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Abstract

Interaction-induced processes are studied using the third-order nonlinear polarization created in polarization-dependent four-wave-mixing experiments (FWM) on a ZnSe single quantum well. We discuss their influence by a comparison of the experimental FWM with calculations based on extended optical Bloch equations including local-field effects, excitation-induced dephasing, and biexciton formation. The investigations show that, for copolarized input fields, excitation-induced dephasing is the dominant FWM mechanism, followed by the conventional density-grating FWM process, biexcitonic contributions, and local-field effects. For cross-linear polarized input fields the excitation-induced dephasing mechanism is canceled so that the conventional density-grating FWM process and biexcitonic contributions are dominating. [S0163-1829(99)05428-4].

Item Type: Article
Uncontrolled Keywords: OPTICAL-RESPONSE; GAAS; EXCITATION;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Experimental and Applied Physics
Depositing User: Dr. Gernot Deinzer
Date Deposited: 11 Jan 2023 08:19
Last Modified: 11 Jan 2023 08:19
URI: https://pred.uni-regensburg.de/id/eprint/49067

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