Omnidirectional band gaps in quasiperiodic photonic crystals in the THz region

Thermal radiation in one-dimensional photonic quasicrystals with graphene

“…The quasiperiodic structures choosen here are of the type generally known as substitutional sequences. Their scientific importance and significance can be measured by their investigation in several areas of mathematics [14], computer science [15], cryptography [16] and optics [17,18] to cite just a few. Besides, they are characterized by the nature of their Fourier spectrum, which can be dense pure points (as for the Fibonacci sequence) or singular continuous (as for the Thue-Morse and Double-period sequences) [19,20].…”

Optical properties of periodic, quasi-periodic, and disordered one-dimensional photonic structures

“…' There'are'many'different'types'of'photonic'quasicrystals' [19]. 'For'example,'the'1D'photonic' quasicrystal'in'Figure '2'is'generated'by'following'the'Fibonacci'sequence' [51][52][53],'while'the' 2D'photonic'quasicrystal'in'the'centre'of'the'Figure 'is'a'Penrose'structure' [24,54,55]. 'Finally,' the'3D'photonic'quasicrystal'depicted'in'Figure '2'is'an'icosahedral'quasicrystalline'structure' [56,57].'…”

Analysis of photonic bandgap structure for a polaritonic photonic crystal in negative-index region

“…The material parameters used for Eqs. (1) and (2) are ω LO 294.7 THz, ω TO 167.8 THz, λ 0 12.238 μm (ω 0 154 THz), ε ∞ 13.4, Γ γ 0.6 THz, and F 0.56 [21]. With these parameters, the calculated frequency-dependent real and imaginary parts of the refractive index in Eq.…”