Bistability behaviors in an optical ring cavity filled with a dense V-type four-level atomic medium are theoretically investigated.It is found that the optical bistability can appear in the negative refraction frequency band,while both the bistability and multi-stability can occur in the positive refraction frequency bands.Therefore,optical bistability can be realized from conventional material to negative index material due to quantum coherence in our scheme.
【英文摘要】
Bistability behaviors in an optical ring cavity filled with a dense V-type four-level atomic medium are theoretically investigated.It is found that the optical bistability can appear in the negative refraction frequency band,while both the bistability and multi-stability can occur in the positive refraction frequency bands.Therefore,optical bistability can be realized from conventional material to negative index material due to quantum coherence in our scheme.
【基金】
Project supported by the Fundamental Research Funds for the Central University (Grant Nos.GK201002024 and GK201003003);
the National Natural Science Foundation of China (Grant Nos.11104176 and 11104185);
the Natural Science Foundation of Shaanxi Province,China (Grant No.2011JQ1008);
the Special Fund of Shanghai Outstanding Young Teachers,China (Grant Nos.slg10054 and slg10023);
the Innovation Program of Shanghai Municipal Education Commission,China (Grant No.11YZ118)
【更新日期】
2014-03-06
【分类号】
O431.2
【正文快照】
1.IntroductionOptical bistability(OB)is a phenomenon in whichthe system exhibits two output intensities for the same in-put intensity.[1,2]It has been an interesting topic becauseof its wide applications in optical transistors,memory el-ements,all optical
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