The e-negative property in metacomposites has triggered tremendous interest in electromagnetic fields. In this work, a tunable and weakly e-negative property was obtained in graphene–carbon black/C...

Graphene–Carbon Black/CaCu3Ti4O12 Ternary Metacomposites toward a Tunable and Weakly ε-Negative Property at the Radio-Frequency Region

The transverse magneto-optical Kerr effect (TMOKE) in magnetite-based magnetoplasmonic crystals is studied experimentally and theoretically. We analyze angle-resolved TMOKE spectra from two types of structures where noble metallic stripes are incorporated inside a thin magnetite film or located on top of a homogeneous film. A multiple-wide-band enhancement of the TMOKE signal in transmission is demonstrated. The complex dielectric permittivity and gyration are experimentally determined using the ellipsometry technique as well as Faraday rotation and ellipticity measurements. The obtained parameters are used in rigorous coupled-wave analysis (RCWA) calculations for studying the optical resonances. Our RCWA calculations of transmittance and TMOKE are in good agreement with the experimental data. The role of guiding and plasmonic modes in the TMOKE enhancement is revealed. We demonstrate that the TMOKE provides rich information about the studied optical resonances.

Wide-band enhancement of the transverse magneto-optical Kerr effect in magnetite-based plasmonic crystals

Dodecanacci extrinsic magnetized plasma multilayer

The topological state in photonics was first realized based on the magnetic-optic (MO) effect and developed rapidly in recent years. This review summarizes various topological states. First, the conventional topological chiral edge states, which are accomplished in periodic and aperiodic systems based on the MO effect, are introduced. Some typical novel topological states, including valley-dependent edge states, helical edge states, antichiral edge states, and multimode edge states with large Chern numbers in two-dimensional and Weyl points three-dimensional spaces, have been introduced. The manifest point of these topological states is the wide range of applications in wave propagation and manipulation, to name a few, one-way waveguides, isolator, slow light, and nonreciprocal Goos–Hänchen shift. This review can bring comprehensive physical insights into the topological states based on the MO effect and provides reference mechanisms for light one-way transmission and light control.

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Magnetic-Optic Effect-Based Topological State: Realization and Application

Ultra-wide unidirectional infrared absorber based on 1D gyromagnetic photonic crystals concatenated with general Fibonacci quasi-periodic structure in transverse magnetization

In this Letter, we report a gyromagnetic superlens showing giant transverse magneto-optical Kerr effect (TMOKE) in a wide-range of incident angles. The existence of loss is the heart of TMOKE, and we found that the wide-angle giant TMOKE occurs when this loss takes place due to permittivity, while the gyration parameter is the result of permeability. Thus, the permeability of the mentioned gyromagnetic slab is tensor, and it only responds to s-polarized light.

Wide-angle giant transverse magneto-optical Kerr effect in a gyromagnetic superlens.

Octonacci magnetophotonic quasi-crystals

In this paper, we have theoretically investigated the optical spectra of all superconducting aperiodic photonic crystals comprising from different superconductors namely high-high, low-low and high-low temperature configurations. Also, the name Octonacci is composed of Octo-from octagonal and -acci from the Fibonacci sequence, however, the Octonacci sequence has a geometric origin. In order to show the difference between TE- and TM-polarized lightwaves, we have analyzed both the influence of the incident angle and temperature of light wave on the PBGs as well as transmittance resonance-peaks. By the way, the possibility of obtaining deep photonic band gap (PBG) has been provided for both TE and TM polarizations for the most incident angles. This study also investigates the effect of generation number of the Octonacci sequence on the PBG spectrum within the visible range. The results show that optical performances of Octonacci all superconducting aperiodic photonic crystals are higher than Fibonacci ones even with upper generations. Finally, to show the impact of the results, we have made a comparison between this new investigating quasi-periodic sequence and periodic all superconducting ones.

Mansoureh Amanollahi

Papers

Wide-angle giant transverse magneto-optical Kerr effect in a gyromagnetic superlens.

Octonacci magnetophotonic quasi-crystals

Photonic band gap spectra in Octonacci all superconducting aperiodic photonic crystals

Controlling the transverse magneto-optical Kerr effect with near-zero refractive index bi-gyrotropic metamaterials

Performance of transverse magneto-optical Kerr effect in double-positive, double-negative and single-negative bi-gyrotropic metamaterials