Knob for changing light propagation from subluminal to superluminal

被引：228

作者：

Agarwal, GS ^{[1
]}

Dey, TN

Menon, S

机构：

[1] Phys Res Lab, Ahmadabad 380009, Gujarat, India

[2] Illinois State Univ, Intense Laser Phys Theory Unit, Normal, IL 61790 USA

[3] Illinois State Univ, Dept Phys, Normal, IL 61790 USA

来源：

PHYSICAL REVIEW A | 2001年 / 64卷 / 05期

关键词：

D O I：

10.1103/PhysRevA.64.053809

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We show how the application of a coupling field connecting the two lower metastable states of a Lambda system can produce a variety of effects on the propagation of a weak electromagnetic pulse. In principle the light propagation can be changed from subluminal to superluminal. The negative group index results from regions of anomalous dispersion and gain in susceptibility.

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页数：4

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