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Theory of the dynamical stark effect of excitons in CdS

  • The dynamical Stark effect of excitons in CdS bulk crystals has been measured recently using differential transmission spectroscopy (DTS). A general DTS formula is derived taking into account exciton-exciton interaction. A perculiar influence of the pump and test polarization on its magnitude is predicted. Concerning the dephasing (transverse relaxation), coupling to optical phonons is treated on a microscopic level. A density-matrix approach leads to the imaginary part of the exciton-phonon self energy. Its strong frequency dependence which shows up as a non-Markoff relaxation strongly suppresses the relaxation for the pump pulse at large detuning. A more sophisticated approach using the non-equilibrium Green function gives deeper insight into the underlying scattering processes.
Metadaten
Author: R. Zimmermann, Prof. Dr. Michael Hartmann
Parent Title (English):Journal of Crystal Growth
Document Type:Article
Language:English
Date of Publication (online):2014/07/16
Year of first Publication:1990
Publishing Institution:SRH Berlin University of Applied Sciences
Release Date:2014/07/16
Tag:Physics
Volume:101
Issue:1-4
First Page:341
Last Page:345
Note:
Volltext aus urheberrechtlichen Gründen nicht verfügbar.
Full text due to copyright not available.
Link author profile:https://www.srh-berlin.de/hochschule/hochschulteam/hartmann-michael/
Peer-reviewed:Keine Angabe - No details
JEL-Classification:Y Miscellaneous Categories
Licence (German):License LogoCreative Commons - Namensnennung-Nicht kommerziell-Keine Bearbeitung
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