A5060873455- Photonic Crystals and Applications
- Magneto-Optical Properties and Applications
- Photonic and Optical Devices
- Plasmonic and Surface Plasmon Research
- Orbital Angular Momentum in Optics
- Magnetic Properties and Applications
- Electromagnetic wave absorption materials
- Strong Light-Matter Interactions
- Magnetic Properties and Synthesis of Ferrites
- Non-Destructive Testing Techniques
- Advanced Fiber Optic Sensors
- Iron oxide chemistry and applications
- Liquid Crystal Research Advancements
- Optical Polarization and Ellipsometry
- Gold and Silver Nanoparticles Synthesis and Applications
- Metamaterials and Metasurfaces Applications
- Plant and animal studies
- Nonlinear Dynamics and Pattern Formation
- Molecular spectroscopy and chirality
- Surface Roughness and Optical Measurements
- Nonlinear Photonic Systems
Research Institute of Agriculture of Crimea
2016-2024
V.I. Vernadsky Crimean Federal University
2021-2024
Institute of Physics and Technology
2017-2023
Institute of Physics and Technology
2023
Institute of Physics
2019
A magnetophotonic Tamm structure with a bilayer film of Bi-substituted iron garnets (Bi:IG) significant magneto-optical (MO) response, placed in microcavity, and plasmon-polaritons (TPP) excited at the interface Au layer, were proposed. Optical MO spectra hybrid state investigated theoretically experimentally Faraday effect geometry normal incidence light wave. Anticrossing behavior TPP Fabry-Perot resonances dependence spectral splitting on their thickness layer was shown. By varying top...
Here we experimentally demonstrate the topological Faraday effect-the polarization rotation caused by orbital angular momentum of light. It is found that effect optical vortex beam passing through a transparent magnetic dielectric film differs from for plane wave. The additional contribution to depends linearly on charge and radial number beam. explained in terms spin-orbit interaction. These findings underline importance using beams studies magnetically ordered materials.
We demonstrate a giant enhancement of the Faraday effect in magnetoplasmonic nanocomposite based on Au nanoparticles and bismuth-substituted iron-garnet film. The gets increased by more than 20 times with respect to same bare magnetic film due excitation single collective localized plasmon resonances nanoparticles. phenomenon is studied for different thicknesses layer. A decrease layer thickness provides spectral shift plasmonic increases effect. rotation was obtained an optimal ratio...
New original Tamm plasmon-polaritons (TPP) structures with Bi-substituted iron garnet and Au plasmonic layers were proposed, synthesized investigated. The single double modelled to form a TPP mode at the center of photonic band gab. top layer has gradient thickness varied in range from 0 65.2 nm. It was found features resonances as function metal coating. on have maximum optical quality factor transmission vicinity 30 These configurations are optimum highest intensity electric field light...
The results of the asymmetric magneto-optical rotation in magnetoplasmonic nanocomposite study are presented. asymmetry is observed spectra when a medium with plasmonic subsystem magnetized along or against radiation wave vector. as vertical displacement hysteresis loop too. Such detected nanocomposite, which consists layer Bi substituted iron-garnet intercalated gold self-assembled nanoparticles. It shown that physical reason for manifestation Cotton–Mouton birefringence effect normal...
The phenomena of magneto-optical polarization rotation and circular magnetic dichroism are well known in the Faraday configuration. We present another effect, an odd linear dichroism, arising nanostructures with polarization-dependent mode Q-factors components. It reveals itself as modulation light intensity for two opposite magnetization directions effect was demonstrated on a magnetophotonic crystal cavity mode, Q-factor which is due to oblique incidence. For angle 60° (or 120°) incidence...
It is represented the results of modelling magnetooptical properties in reflection polar geometry one-dimensional photonic crystal, which highly Bi-substituted iron garnet defect composition Bi1.0Y0.5Gd1.5Fe4.2Al0.8O12 / Bi2.8Y0.2Fe5Oi2 located between dielectric Bragg mirrors (SiO2 TiO2)m (were m number layer pairs) and buffer SiO2 gold top layers different thicknesses placed on structure. The modification spectral line- shapes microcavity Tamm plasmon-polariton modes depending found.
Abstract In present work the results about study of spectral features magneto-optical hysteresis loop (Faraday rotation) vertical shifting effect in magneto-plasmonic nanocomposite Bi:YIG/Au( NP )/GGG are shown. It is shown that range near localized plasmon-polariton resonance (LPPR) has a shift “delta”). The at left and right side LPPR have different sign become null. locations Faraday “delta” maxima due to width resonant line.
Optical and Faraday rotation spectra of magneto-optical microcavity coated with Au plasmonic layer gradient thickness were investigated theoretically experimentally. It was shown that the Tamm plasmon-polaritons mode forms near long-wavelength edge photonic band gap. The presence coating 90.4 nm increase at cavity resonances in 1.3 7 times, respectively. By transfer matrix method it found incorporation SiO2 buffer a range from 155 to 180 between leads strong coupling plasmon-polaritons. In...
Here we demonstrate nanometer thick iron garnet films suitable for the magneto-optical applica-tions. Bismuth-substituted of compositions Bi{_1}Y{_2}Fe{_5}O{_{12}} and Bi{_1}Tm{_2}Fe{_5}O{_{12}} deposited on gadolinium gallium substrate are fabricated characterized. Their thicknesses range from 2 to 10 nm, which corresponds just a few crystal lattice constants. Faraday rotation nanofilms reaches 29.7 deg/{\mu}m at 420 nm is comparable even bit better than single micrometer similar...
Abstract The paper presents the magnetic, optical and magneto-optical properties of easy-plane easy-axis films on base Bi-garnet. possibilities features operation these as sensors in eddy current introscopy are shown example visualization linear defects products made from aluminum alloys.
Abstract The work presents the results of investigation hybrid states Tamm plasmon polaritons (TPP) in magnetoplasmonic nanostructures (MPNS) based on Bi-substituted iron garnet (Bi:IG) and Au layers nanoparticles. To study interaction resonances, two MPNS were synthesized with gold-coated dielectric layer gradient thickness. It was shown difference properties model state TPP – Fabry-Perot a single excitation. suggested to use increase sensitivity optical sensors.
Abstract Topography and domain structures of Bi-substituted iron garnet films proposed for magnetoplasmonic applications are presented. Investigations were carried out by scanning probe microscopy methods, including polarization near-field optical microscopy. The most suitable with less rough surface chosen. period structure sputtered film composition Bi 2.8 Y 0.2 Fe 5 O 12 determined, 2 w = 0.5 μm.
Optical and magnetooptical spectra of three magnetophotonic crystals coated with Au layer were investigated theoretically at oblique incidence light. The properties proposed structures studied experimentally normal incidence. two consisting a nonmagnetic dielectric photonic crystal top layers Bi-substituted iron garnet (Bi:IG) −SiO2−Au show blue shift Tamm plasmon-polaritons resonances increasing angle without spectral splitting for TE TM incident coupling between cavity mode in the...
Here we theoretically and experimentally demonstrate a way to control the intensity of optical vortices by magnetic field directed along beam axis. We describe principle an vortex modulator switch based on Faraday effect in iron garnet film. Importantly, influences only polarization plane keeps its topological charge.