Optical Properties Of Photonic Crystals

By P. Holtzmann. 2016

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Deep Learning the Electromagnetic Properties of Metamaterials—A Comprehensive Review (2021, background): “Photonic crystals (PCs), photonic band gap (PBG), or electromagnetic band gap (EBG) materials, are artificial electromagnetic materials that consist of periodic objects that either prevent (band-gap) or permit (defect state) the propagation of electromagnetic waves at a particular wavelength, or ove”
Extended Bound States in the Continuum with Symmetry‐Broken Terahertz Dielectric Metasurfaces (2021, background): “Moreover, it can also be observed that the accidental BICs for TM2 band at Δ point in the Brillouin zone, that is, accidental in-plane wavevector (kx,ky), that belongs to the A irreducible representation (quadruple-like field profile) of a C1h point group according to the compatibility relations.[49”
Experimental observation of a polarization vortex at an optical bound state in the continuum (2018, methodology): “These are waveguide modes that couple to free space through grating diffraction, as evident from their folded-back dispersion.(15) It was theoretically shown by Zhen et al.”
Two-dimensionally confined topological edge states in photonic crystals (2016, background): “The labels on the horizontal axis corresponds to the high-symmetry points in k-space as designated in (a) [31].”