Abstract
The directional dynamics of the resonant Rayleigh scattering from a semiconductor microcavity is investigated. When optically exciting the lower polariton branch, the strong dispersion results in a directional emission on a ring. The coherent emission ring shows a reduction of its angular width for increasing time after excitation, giving direct evidence for the time-energy uncertainty in the dynamics of the scattering by disorder. The ring width converges with time to a finite value, a direct measure of an intrinsic momentum broadening of the polariton states localized by multiple disorder scattering.
Original language | English |
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Journal | Physical Review Letters |
Volume | 88 |
Issue number | 4 |
Pages (from-to) | 047401 |
ISSN | 0031-9007 |
DOIs | |
Publication status | Published - 2002 |
Bibliographical note
Copyright (2002) American Physical SocietyKeywords
- DISORDERED-SYSTEMS
- SEMICONDUCTOR MICROCAVITY
- QUANTUM-WELL STRUCTURES
- RESONANT RAYLEIGH-SCATTERING
- COHERENCE
- EXCITONS