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Titolo:
DEPHASING OF INTERACTING HEAVY-HOLE AND LIGHT-HOLE EXCITONS IN GAAS QUANTUM-WELLS
Autore:
BOTT K; MAYER EJ; SMITH GO; HEUCKEROTH V; HUBNER M; KUHL J; MEIER T; SCHULZE A; LINDBERG M; KOCH SW; THOMAS P; HEY R; PLOOG K;
Indirizzi:
MAX PLANCK INST FESTKORPERFORSCH,HEISENBERGSTR 1 D-70569 STUTTGART GERMANY UNIV MARBURG,FACHBEREICH PHYS D-35032 MARBURG GERMANY UNIV MARBURG,WISSENSCH ZENTRUM MAT WISSENSCH D-35032 MARBURG GERMANY PAUL DRUDE INST FESTKORPERELEKT D-10177 BERLIN GERMANY ABO AKAD UNIV,INST FYS SF-20500 TURKU FINLAND
Titolo Testata:
Journal of the Optical Society of America. B, Optical physics
fascicolo: 5, volume: 13, anno: 1996,
pagine: 1026 - 1030
SICI:
0740-3224(1996)13:5<1026:DOIHAL>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
POLARIZATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
20
Recensione:
Indirizzi per estratti:
Citazione:
K. Bott et al., "DEPHASING OF INTERACTING HEAVY-HOLE AND LIGHT-HOLE EXCITONS IN GAAS QUANTUM-WELLS", Journal of the Optical Society of America. B, Optical physics, 13(5), 1996, pp. 1026-1030

Abstract

We describe a novel three-pulse degenerate four-wave mixing configuration that permits the direct observation of the coherence between the sigma(+) and the sigma(-) exciton states in a GaAs quantum well excited in a two-photon process. It is found that the phase coherence between the two single heavy-hole exciton states decays with a time constantthat is considerably longer than the dephasing time of the coherence between these states and the ground state (interband coherence). All the experimental data are well described by numerical solutions of the optical Bloch equations for a phenomenological multilevel model.

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Documento generato il 28/11/20 alle ore 09:18:18