Slowdown of Group Velocity of Light Using Coherent Population Oscillation  

作　　者：邱巍 掌蕴东 叶建波 王楠 王金芳 田赫 袁萍 

机构地区：[1]National Key Laboratory of Tunable Laser Technology, Institute of Opto-electronics, Harbin Institute of Technology, Harbin 150080

出　　处：《Chinese Physics Letters》2008年第2期489-492,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 60478014 and 60272075.

摘　　要：We investigate the reduction of the group velocity propagation resulting from the steep change of the refractive index by the coherent population oscillation in erbium-doped optical fibre. The largest delay is measured to be about 8.75ms corresponding to a group index of 1.312×10^6. The time delay or advancement depends on the pump intensity. Influences of the ion density on the fractional delay and the group velocity reduction of light propagation are studied. Based on our discussion the optimization parameters should be selected in order to obtain more appropriate time delay and the slowdown of group velocity.We investigate the reduction of the group velocity propagation resulting from the steep change of the refractive index by the coherent population oscillation in erbium-doped optical fibre. The largest delay is measured to be about 8.75ms corresponding to a group index of 1.312×10^6. The time delay or advancement depends on the pump intensity. Influences of the ion density on the fractional delay and the group velocity reduction of light propagation are studied. Based on our discussion the optimization parameters should be selected in order to obtain more appropriate time delay and the slowdown of group velocity.

关 键 词：PULSARS x-ray spectra relativity and gravitation REDSHIFT 

分 类 号：O43[机械工程—光学工程]