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Enhancement of nonlinear susceptibility in a four-level tripod scheme

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【Author】 Xiang’an Yan,Liqiang Wang,Baoyin Yin,and Jianping Song 1 Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi’an Jiaotong University,Xi’an 710049,China 2 School of Science,Xi’an Polytechnic University,Xi’an 710048,China 3 Department of Applied Mathematics and Applied Physics,Xi’an University of Posts and Telecommunications, Xi’an 710061,China

【机构】 Key Laboratory for Physical Electronics and Devices of the Ministry of Education,Xi’an Jiaotong University； China School of Science,Xi’an Polytechnic University； Department of Applied Mathematics and Applied Physics,Xi’an University of Posts and Telecommunications；

【摘要】 <正>We propose a scheme for the enhancement of nonlinear susceptibility in a four-level tripod-type atomic system in the presence of a microwave field.With a microwave field,nonlinear susceptibility can be enhanced. Nonlinearity can also be ulteriorly enhanced by controlling the coupling field under the optimal intensity of the microwave field.The physical mechanism of the obtained giant nonlinear susceptibility is mainly based on interactions between microwave field and coupling fields.We present a physical understanding of our numerical results using a dressed-state approach and an analytical explanation.更多还原

【Abstract】 We propose a scheme for the enhancement of nonlinear susceptibility in a four-level tripod-type atomic system in the presence of a microwave field.With a microwave field,nonlinear susceptibility can be enhanced. Nonlinearity can also be ulteriorly enhanced by controlling the coupling field under the optimal intensity of the microwave field.The physical mechanism of the obtained giant nonlinear susceptibility is mainly based on interactions between microwave field and coupling fields.We present a physical understanding of our numerical results using a dressed-state approach and an analytical explanation.更多还原

【关键词】 susceptibility； microwave； explanation； nonlinearity； giant； Hamiltonian； maximal； versus； Probe； vanishing；

【基金】 supported by the National Natural Science Foundation of China(No.60678005);the Foundation for Key Programs of the Ministry of Education, China(No.105156);the Specialized Research Fund for Doctoral Program of Higher Education of China(No. 2050698017);the Program of School Management of Xi’an Polytechnic University in Xi’an(No.09XG25)

【文献出处】 Chinese Optics Letters ,中国光学快报(英文版) , 编辑部邮箱 ,2010年08期

【分类号】O441.4
【被引频次】1
【下载频次】44

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