Sub- and Super-Luminal Phenomena in a Doubly Driven Four-Level System  

作　　者：韩定安 曾亚光 陈伟成 董少光 黄纯青 朱传云 梁佩莹 

机构地区：[1]Department of Physics,Foshan University

出　　处：《Communications in Theoretical Physics》2011年第4期671-675,共5页理论物理通讯（英文版）

基　　金：Supported by National Natural Science Foundation of China under Grant Nos.61008063 and 10547108;the Key Project of National Natural Science Foundation of China under Grant No.60837004;Natural Science Foundation of Education Department of Guangdong Province of China under Grant No.LYM08099;Natural Science Foundation of Foshan University

摘　　要：With the occurrence of an adding driving field, the properties of the dispersion and the absorption of a four-level system are changed greatly. The system can produce the normal and anomalous dispersion regions with proper parameters. Here, the driving fields can be seemed as knobs to manipulate the group velocity of a weak probe field between subluminal and superluminal.

关 键 词：group velocity SUBLUMINAL SUPERLUMINAL driving fields 

分 类 号：O437[机械工程—光学工程] O431.2[理学—光学]