Elastic scattering dynamics of cavity polaritons: Evidence for time-energy uncertainty and polariton localization

被引：56

作者：

Langbein, W

Hvam, JM

机构：

[1] Univ Dortmund, D-44227 Dortmund, Germany

[2] Tech Univ Denmark, Res Ctr COM, DK-2800 Kogens Lyngby, Denmark

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.88.047401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

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页数：4

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