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.
Author: | R. Zimmermann, Prof. Dr. Michael Hartmann |
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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): | Creative Commons - Namensnennung-Nicht kommerziell-Keine Bearbeitung |