Bound states in the continuum in metal-dielectric photonic crystal with a birefringent defect  

作　　者：Hongzhen Tang Peng Hu Da-Jian Cu Hong Xiang Dezhuan Han 唐宏珍;胡鹏;崔大健;向红;韩德专(Department of Physics and Chongqing Key Laboratory for Strongly Coupled Physics,Chongqing University,Chongqing 401331,China;Chongqing Key Laboratory of Core Optoelectronic Devices for Quantum Communication,Chongqing Optoelectronics Research Institute,Chongqing 400060,China)

机构地区：[1]Department of Physics and Chongqing Key Laboratory for Strongly Coupled Physics,Chongqing University,Chongqing 401331,China [2]Chongqing Key Laboratory of Core Optoelectronic Devices for Quantum Communication,Chongqing Optoelectronics Research Institute,Chongqing 400060,China

出　　处：《Chinese Physics B》2022年第10期177-181,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.12074049 and 12147102)。

摘　　要：By using the difference of the band structure for the TE and TM waves in the metal-dielectric photonic crystals beyond the light cone and the birefringence of the anisotropic crystal,a one-dimensional photonic system is constructed to realize the bound states in the continuum(BICs).In addition to the BICs arising from the polarization incompatibility,the Friedrich-Wintgen BICs are also achieved when the leaking TM wave is eliminated due to the destructive interference of its ordinary and extraordinary wave components in the anisotropic crystal.A modified scheme favorable for practical application is also proposed.This scheme for BICs may help to suppress the radiation loss in the metal-dielectric photonic crystal systems.

关 键 词：bound state in the continuum BIREFRINGENCE metal-dielectric photonic crystal INTERFERENCE 

分 类 号：O48[理学—固体物理]