Odd Magneto-Optical Linear Dichroism in a Magnetophotonic Crystal

Abstract

The phenomena of magneto-optical polarization rotation and circular magnetic dichroism are well known in the Faraday configuration. We present another effect, an odd magneto-optical linear dichroism, arising in nanostructures with polarization-dependent mode Q-factors and magneto-optical components. It reveals itself as the magneto-optical modulation of light intensity for the two opposite magnetization directions in the Faraday configuration. The effect was demonstrated on a magnetophotonic crystal with a cavity mode, the polarization-dependent Q-factor of which is due to oblique incidence. For a polarization angle of 60° (or 120°) and an angle of incidence around 60°, the magneto-optical intensity modulation maximizes and reaches 6%.

Nonlinear localized states near the interface with nonlinear response between the medium with a parabolic index spatial profile and Kerr-type medium

“…They can be used effectively for various applications in various fields of physics studying wave processes and technical applications in photonic crystal slabs, waveguides, single subwavelength particles [62]. They includes include filtering [63], lasing [64], magnetophotonics [65], detection of biological objects [66], nonlinear generation and self-action [67], photonic devices [68], active THz devices [69], optical tuning of halcogenide metasurfaces [70], enhancement of chiral nonlinear response [71], and harmonic generation in hybrid structures with monolayers of transition metal dichalcogenides [72]. Moreover, localized states in the continuum in single nanoparticles can be applied to achieve a record-high efficiency of second-harmonic and higher harmonic generation [73], the generation of quantum-entangled photons [74], and low-threshold lasing [75].…”