Tunable polychromatic filters based on semiconductor-superconductor-dielectric periodic and quasi-periodic hybrid photonic crystal

Abstract

Abstract We theoretically report on the transmittance of a novel hybrid photonic crystals built from ternary periodic and quasi-periodic structures, each composed of dielectric (TiO2), semiconductor (GaAs) and high temperature superconductor (HgBa2Ca2Cu3O8+δ) materials. Using the transfer matrix method and the two-fluid model, two well-defined photonic gaps located in the infrared are accompanied by N resonant modes with high transmittance, where N depends on the number of aperiodic repetitions inserted within the periodic structure. We found that temperature, layer thicknesses, pressure, and incident angle all have strong and distinctive effects on the frequency of the gaps and resonant modes. By offering several tuning modalities and independent control over individual resonant frequencies, our hybrid photonic crystal provides outstanding flexibility for the design of terahertz polychromatic filters.