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Positive-negative birefraction phenomenon for TM polarization in annular photonic crystal

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【Author】 Yuan Zhang 1, Yifeng Shen 1,2, Jie Zhou 1, Yongchun Wang 1, Fangfang Wu1, Jian Sun 1, and Changqing Guo 1 1Physics Department of the Science College, China University of Mining and Technology, Xuzhou 221116, China 2Surface Physics Laboratory, Fudan University, Shanghai 200433, China

【机构】 Physics Department of the Science College, China University of Mining and Technology； Surface Physics Laboratory, Fudan University；

【摘要】 We propose a two-dimensional (2D) annular photonic crystal (APC) with dual equi-frequency contours (EFCs) in one band. The refractive behaviors of a Gaussian beam incident from air to the APC are analyzed by the EFC analysis and finite-diflerence time-domain (FDTD) method. The results show the positive-negative birefraction phenomenon for the transverse magnetic (TM) polarization in the same band occurs at the interface between air and the APC, and the surface termination of the APC has a large effect on the strength of the negatively refracted beam.更多还原

【Abstract】 We propose a two-dimensional (2D) annular photonic crystal (APC) with dual equi-frequency contours (EFCs) in one band. The refractive behaviors of a Gaussian beam incident from air to the APC are analyzed by the EFC analysis and finite-diflerence time-domain (FDTD) method. The results show the positive-negative birefraction phenomenon for the transverse magnetic (TM) polarization in the same band occurs at the interface between air and the APC, and the surface termination of the APC has a large effect on the strength of the negatively refracted beam.更多还原

【关键词】 photonic； annular； termination； incident； refractive； handed； refraction； negatively； pillar； corners；

【基金】 supported by the Science Foundation of China University of Mining and Technology (No.OK061065);the Fundamental Research Funds for the Central Universities (No. 2010LKWL10)

【文献出处】 Chinese Optics Letters ,中国光学快报(英文版) , 编辑部邮箱 ,2011年02期

【分类号】O734
【被引频次】6
【下载频次】50

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