Control of Wave Propagation and Effect of Kerr Nonlinearity on Group Index

被引：9

作者：

Ali, Hazrat ^{[1
]}

Ziauddin ^{[2
]}

Ahmed, Iftikhar ^{[1
]}

机构：

[1] Univ Malakand, Dept Phys, Khyber Pakhtunkhwa, Pakistan

[2] COMSATS Inst Informat Technol, Dept Phys, Islamabad, Pakistan

来源：

COMMUNICATIONS IN THEORETICAL PHYSICS | 2013年 / 60卷 / 01期

关键词：

normal and anomalous dispersion; Kerr field; group index; LIGHT; INFORMATION; SPEED;

D O I：

10.1088/0253-6102/60/1/12

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We use four-level atomic system and control the wave propagation via forbidden decay rate. The Raman gain process becomes dominant on electromagnetically induced transparency (EIT) medium by increasing the forbidden decay rate via increasing the number of atoms [G.S. Agarwal and T.N. Dey, Phys. Rev. A 74 (2005) 043805 and K. Harada, T. Kanbashi, and M. Mitsunaga, Phys. Rev. A 73 (2006) 013803]. The behavior of wave propagation is dramatically changed from normal (subluminal) to anomalous (superluminal) dispersion by increasing the forbidden decay rate. The system can also give a control over the group velocity of the light propagating through the medium via Kerr field.

引用

页码：87 / 92

页数：6

共 31 条

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