Coherent coupling in inhomogeneously broadened exciton ensembles

Author

Finger, E. ; Kraft, Silke ; Euteneuer, A. ; Hofmann, Martin ; Stolz, Wolfgang ; Meier, T. ; Thomas, Paul ; Koch, S.W. ; Ruhle, W.W.

Author_Institution

Fachbereich Phys., Philipps-Univ., Marburg, Germany

fYear

2000

fDate

10-15 Sept. 2000

Abstract

Summary form only given. Inhomogeneous broadening is the most obvious consequence of disorder, and an inhomogeneously broadened exciton line might be considered as a superposition of homogeneously broadened subensembles of excitons. However, a possible coherent coupling in inhomogeneously broadened exciton ensemble structures leads to effects like disorder induced dephasing. We study the excitonic structure of various semiconductor quantum wells with different types and strengths of disorder by means of coherent excitation spectroscopy.

Keywords

excitons; light coherence; semiconductor quantum wells; spectroscopy; coherent coupling; coherent excitation spectroscopy; disorder induced dephasing; homogeneously broadened exciton subensemble; inhomogeneously broadened exciton ensemble structures; inhomogeneously broadened exciton ensembles; inhomogeneously broadened exciton line; semiconductor quantum wells; Diffusion processes; Excitons; Fingers; Four-wave mixing; Length measurement; Polarization; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Quantum Electronics Conference, 2000. Conference Digest. 2000 International

Conference_Location

Nice, France

Print_ISBN

0-7803-6318-3

Type

conf

DOI

10.1109/IQEC.2000.908097

Filename

908097