中国物理B ›› 2022, Vol. 31 ›› Issue (10): 104209-104209.doi: 10.1088/1674-1056/ac6db6

所属专题: SPECIAL TOPIC — Optical field manipulation

• SPECIAL TOPIC—Optical field manipulation • 上一篇    下一篇

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

Hongzhen Tang(唐宏珍)1, Peng Hu(胡鹏)1, Da-Jian Cui(崔大健)2, Hong Xiang(向红)1,†, and Dezhuan Han(韩德专)1,‡   

  1. 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
  • 收稿日期:2022-03-22 修回日期:2022-04-24 出版日期:2022-10-16 发布日期:2022-09-30
  • 通讯作者: Hong Xiang, Dezhuan Han E-mail:xhong@cqu.edu.cn;dzhan@cqu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 12074049 and 12147102).

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

Hongzhen Tang(唐宏珍)1, Peng Hu(胡鹏)1, Da-Jian Cui(崔大健)2, Hong Xiang(向红)1,†, and Dezhuan Han(韩德专)1,‡   

  1. 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
  • Received:2022-03-22 Revised:2022-04-24 Online:2022-10-16 Published:2022-09-30
  • Contact: Hong Xiang, Dezhuan Han E-mail:xhong@cqu.edu.cn;dzhan@cqu.edu.cn
  • Supported by:
    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

Abstract: 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.

Key words: bound state in the continuum, birefringence, metal—dielectric photonic crystal, interference

中图分类号:  (Birefringence, polarization)

  • 42.81.Gs
73.20.Mf (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)) 78.67.Pt (Multilayers; superlattices; photonic structures; metamaterials) 42.25.Hz (Interference)