Analysis of Photonic Band Gaps in a Two-Dimensional Triangular Lattice with Superconducting Hollow Rods

Diaz-Valencia, B. F.; Calero, J.

doi:10.1007/s10909-016-1701-y

Cited by 4 publications

(4 citation statements)

References 33 publications

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“…The models in Tables 1(a)-1(c) use a square lattice structure, and that in Table 1(d) uses a triangular lattice structure. [59] In Table 1, a, r, b, c, and d represent the lattice constant, radius of a circular crystal column, side length of a square crystal column, height of a rectangular crystal column, and width of a rectangular crystal column, respectively. The dimensions of the different variables are a = 2250 nm-3375 nm, r = 210 nm-1190 nm, b = 280 nm-2100 nm, c = 490 nm-2450 nm, and d = 420 nm-1190 nm.…”

Section: Model and Methodsmentioning

confidence: 99%

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A 3-5 μm broadband YBCO high-temperature superconducting photonic crystal

Liu

Jia

et al. 2023

Chinese Phys. B

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Photonic crystal structures have excellent optical properties, so they are widely studied in conventional optical materials. Recent research shows high-temperature superconducting periodic structures have natural photonic crystal features and are favourable candidates for single-photon detection. Considering that superconductors have completely different properties from conventional optical materials, we study the energy level diagram and mid-infrared 3–5 μm transmission spectrum of two-dimensional superconducting photonic crystals in both superconducting and quenched states with the finite element method. The energy level diagram of the circular crystal column superconducting structure shows that the structure has a large band gap width in both states. At the same fill factor, the circular crystal column superconducting structure has a larger band gap width than the other structures. For lattice structures, the zero transmission point of the square lattice structure is robust to the incident angle and environmental temperature. Our research has guiding significance for the design of new material photonic crystals, photon modulation and detection.

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Section: Model and Methodsmentioning

confidence: 99%

“…ω, µ 0 , and ε 0 are the frequency, vacuum permeability, and vacuum permittivity, respectively. λ L is the London penetration depth, calculated by [59] λ…”

Section: Model and Methodsmentioning

confidence: 99%

A 3-5 μm broadband YBCO high-temperature superconducting photonic crystal

Liu

Jia

et al. 2023

Chinese Phys. B

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“…This implies the absence of transmission for signals with frequencies within a given interval of values. Such a property is highly useful in applications involving optical devices [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. For these applications, it is essential to tune the properties of PBGs and to obtain the widest possible band gaps.…”

Section: Introductionmentioning

confidence: 99%

“…For example, metals exhibit inherent losses, which are caused by the extinction coefficient. To overcome these problems, a variety of unconventional materials have been used, such as superconductors [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. In superconductors, optical properties are strongly influenced by temperature and magnetic fields.…”

Section: Introductionmentioning

confidence: 99%

Tunable Photonic Band Gaps in Two-Dimensional Bravais–Moiré Photonic Crystal Composed of High-Tc Superconductors

2023

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In this study, we perform a theoretical study of light propagation properties in two-dimensional square photonic crystals (PCs) following Bravais–Moiré (BM) patterns composed of copper oxide high-temperature superconductors (HTSCs). The BM PCs are made of cylindrical cores formed from the combination of two square Bravais lattices. The Moiré pattern forms due to a commensurable rotation of one of these lattices with respect to the other. The dielectric function of the superconducting material is modeled by the two-fluid Gorter–Casimir theory. We report on the corresponding gap, the mapping as a function of the radius of dielectric cores, as well as the dispersion relations of TM modes for BM PCs and for the waveguide system built of defect lines within such a crystal. The BM PCs were composed of copper oxide HTSCs, which exhibit large tunability in terms of temperature.

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