Wu Feng, Liu Dejun, Li Hongju, Feng Mingku
School of Optoelectronic Engineering, Guangdong Polytechnic Normal University, Guangzhou 510665, China.
Department of Physics, Shanghai Normal University, Shanghai 200234, China.
Phys Chem Chem Phys. 2023 Apr 12;25(15):10785-10794. doi: 10.1039/d3cp00280b.
According to the Bragg scattering theory, photonic bandgaps (PBGs) in all-dielectric one-dimensional (1-D) photonic crystals (PhCs) are polarization-insensitive. This polarization-insensitive property of PBGs poses a challenge in wide-angle high-performance polarization selection. Herein, we theoretically investigate the angle dependence of the PBGs in a novel kind of 1-D PhC called all-hyperbolic-metamaterial (all-HMM) 1-D PhC entirely composed of HMMs. As the incident angle increases, the PBGs in all-HMM 1-D PhCs exhibit the redshift property under transverse magnetic polarization while exhibiting the blueshift property under transverse electric polarization. Empowered by the polarization-sensitive property of the PBGs, wide-angle high-performance polarization selection can be theoretically achieved. Such a wide-angle polarizer would be useful in liquid crystal displays, quantum interferometers, and -switched lasers.
根据布拉格散射理论，全介质一维（1-D）光子晶体（PhC）中的光子带隙（PBG）对偏振不敏感。PBG的这种偏振不敏感特性在广角高性能偏振选择方面带来了挑战。在此，我们从理论上研究了一种新型的1-D PhC，即全双曲超材料（all-HMM）1-D PhC中PBG的角度依赖性，该1-D PhC完全由双曲超材料（HMM）组成。随着入射角的增加，全HMM 1-D PhC中的PBG在横向磁偏振下呈现红移特性，而在横向电偏振下呈现蓝移特性。受PBG的偏振敏感特性的助力，理论上可以实现广角高性能偏振选择。这样一种广角偏振器将在液晶显示器、量子干涉仪和开关激光器中有用。
