In-plane propagation of excitonic cavity polaritons

被引：47

作者：

Freixanet, T

Sermage, B

Tiberj, A

Planel, R

机构：

[1] Microstruct & Microelect Lab, F-92225 Bagneux, France

[2] Ctr Natl Etud Telecommun, F-92225 Bagneux, France

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.61.7233

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

By exciting resonantly a microcavity with a pulsed laser beam, we have observed the in-plane propagation of excitonic cavity polaritons over distances much greater than the wavelength. The initial in-plane wave vector is conserved during the propagation, showing that it is a good quantum number for cavity polaritons. The polariton group velocities were measured as a function of both the in-plane wave vector and detuning. Propagation is faster for negative detunings where the polaritons have a light effective mass. The observations are in good agreement with a simple two-oscillator model.

引用

收藏

页码：7233 / 7236

页数：4

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