Enhancement of Kerr nonlinearity with vanishing absorption in a tripod scheme  

作　　者：孙辉 钮月萍 龚尚庆 

机构地区：[1]State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China

出　　处：《Chinese Physics B》2007年第2期429-434,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （Grant No 60478002） and the Key Basic Research Foundation of Shanghai （Grant Nos 04JC14036 and 05DJ14003）.

摘　　要：The giant enhancement of Kerr nonlinearity in a four-level tripod type system is investigated theoretically. By tuning the value of the Rabi frequency of the coherent control field, owing to the double dark resonances, the giantenhanced Kerr nonlinearity can be achieved within the right transparency window. The influence of Doppler broadening is also discussed.The giant enhancement of Kerr nonlinearity in a four-level tripod type system is investigated theoretically. By tuning the value of the Rabi frequency of the coherent control field, owing to the double dark resonances, the giantenhanced Kerr nonlinearity can be achieved within the right transparency window. The influence of Doppler broadening is also discussed.

关 键 词：Kerr nonlinearity dark resonance transparency window Doppler broadening 

分 类 号：O431.2[机械工程—光学工程]