A5020048626- Magneto-Optical Properties and Applications
- Photonic Crystals and Applications
- Plasmonic and Surface Plasmon Research
- Photonic and Optical Devices
- Magnetic properties of thin films
- Mechanical and Optical Resonators
- Optical Polarization and Ellipsometry
- Geophysics and Sensor Technology
- Metamaterials and Metasurfaces Applications
- Optical Coatings and Gratings
- Diamond and Carbon-based Materials Research
- Theoretical and Computational Physics
- Quasicrystal Structures and Properties
- Characterization and Applications of Magnetic Nanoparticles
- Gold and Silver Nanoparticles Synthesis and Applications
- Orbital Angular Momentum in Optics
- Random lasers and scattering media
- Force Microscopy Techniques and Applications
- Organic and Molecular Conductors Research
- Nonlinear Dynamics and Pattern Formation
- High-pressure geophysics and materials
- Quantum optics and atomic interactions
- Advanced Thermodynamics and Statistical Mechanics
- Near-Field Optical Microscopy
- Surface Roughness and Optical Measurements
European Synchrotron Radiation Facility
2024
Russian Quantum Center
2016-2023
Prokhorov General Physics Institute
2015-2023
V.I. Vernadsky Crimean Federal University
2022
Lomonosov Moscow State University
2022
Research Institute of Agriculture of Crimea
2020-2021
Russian Academy of Sciences
2021
St Petersburg University
2013
Nanostructured magnetic materials provide an efficient tool for light manipulation on sub-nanosecond and sub-micron scales, allow the observation of novel effects which are fundamentally impossible in smooth films. For many cases practical importance, it is vital to observe magneto-optical intensity modulation a dual-polarization regime. However, nanostructures reported up date usually utilize transverse Kerr effect thus only p-polarized light. We present concept transparent metasurface...
We provide the experimental research on a novel type of all-dielectric magnetic structure designed to achieve an enhanced magneto-optical response. 1D grating fabricated via etching bismuth substituted iron garnet film supports excitation optical guided modes, which are highly sensitive external field. A unique feature proposed is synergetic combination high transparency, tunability, Q-factor resonances and superior response that two orders higher in magnitude than non-structured smooth...
A multilayer structure consisting of a magnetophotonic crystal with rare-earth iron garnet microresonator layer and plasmonic grating deposited on it was fabricated studied in order to combine functionalities photonic crystals. The pattern allows excitation the hybrid plasmonic-waveguide modes localized dielectric Bragg mirrors or waveguide inside its layer. These give rise additional resonances optical spectra enhancement magneto-optical effects. Faraday effect increases by about 50% at...
Abstract Currently spin waves are considered for computation and data processing as an alternative to charge currents. Generation of by ultrashort laser pulses provides several important advances with respect conventional approaches using microwaves. In particular, focused spot works a point source allows directional control switching between their different types. For further progress in this direction it is manipulate the spectrum optically generated waves. Here we tackle problem launching...
Nanostructured magneto-optical materials that sustain optical resonances provide an efficient way to control light via the magnetic field, which is of prime importance for telecommunication and sensing applications. However, their response usually narrowband due resonance character. Here, we demonstrate investigate a type magnetoplasmonic structure, or quasicrystal, demonstrates unique response. It consists dielectric film covered by thin gold layer perforated slits, forming Fibonacci-like...
Launching and controlling magnons with laser pulses opens up new routes for applications including optomagnetic switching all-optical spin wave emission enables approaches information processing ultralow energy dissipation. However, subwavelength light localization within the magnetic structures leading to efficient magnon excitation that does not inherently absorb has still been missing. Here, we propose marriage laser-induced ultrafast magnetism nanophotonics efficiently excite control...
Optical impact on the spin system in a magnetically ordered medium provides unique possibility for local manipulation of magnetization at subpicosecond time scales. One mechanisms optical is related to inverse Faraday effect (IFE). Usually IFE observed crystals and magnetic films substrate. Here we demonstrate induced by fs-laser pulses film inside magnetophotonic microcavity. Spectral dependence laser pulse wavelength band gap microcavity has sharp peak leading significant enhancement IFE....
Here we demonstrate a novel magnetoplasmonic heterostructure for efficient control of light.It consists gold nanoparticles embedded in thin magnetic film covered with layer pierced periodic nanoslit array.Unique feature the proposed structure is that it supports four different types optical modes same frequency range including localized and propagating surface plasmons along waveguide modes.A peculiar magneto-optical response appears at frequencies mode hybridization.The most important...
Ultra-thin magnetic dielectric films are of prime importance due to their applications for nanophotonics and spintronics. Here, we propose an efficient method the magneto-optical investigation ultra-thin which allows one access state magnetization properties. It is based on surface-plasmon-polariton-assisted transverse Kerr effect (TMOKE). In our experiments, sub-100 nm-thick bismuth-substituted lutetium iron-garnet covered with a plasmonic gold grating have been analyzed. The excitation...
We present the concept of optomagnonic logic gate, where interference spin waves excited by femtosecond laser pulses at multiple points inverse Faraday effect in a bismuth-substituted yttrium iron garnet film plays decisive role. The resulting spin-wave distribution is determined constructive and destructive interference, which controlled polarization sources. A variable platform with spatial light modulator used to control overall manipulating arrangement local demonstrate experimental...
In most of the previous studies spin wave optical generation in magnetic dielectrics, backward volume waves were excited. Here we modified parameters circularly polarized pump beams emitted by femtosecond laser to reveal surface bismuth iron garnet thin film. Beams that are larger than 10 μm diameter generate both and with only one spectral peak near ferromagnetic resonance. On contrary, narrower excite predominantly higher frequency, providing an additional spectrum. Thus different...
Excitation of spin waves a required frequency and directional spectrum is among the crucial tasks in optomagnonics. Here we investigate generation an iron garnet thin film by train femtosecond laser pulses with ultimately high repetition rate up to 10 GHz compare it case 1-GHz rate. The periodic optical excitation close ferromagnetic resonance amplifies particular phase velocity wavelength, which are tunable across wide range small variations detuning, can be adjusted magnitude applied...
As magnetized media by their nature have broken time reciprocity, the spatial symmetry of a material is also crucial and it imposes some restrictions on observed optical phenomena. Thus, for normal incidence light inversion makes transmitted reflected insensitive to direction in-plane magnetization sample. To avoid this limitation, we propose here an approach based magnetoplasmonic structure with symmetry. Combination specially designed asymmetry magnetism in presence losses provides...
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...
We report the enhancement of magneto-optical Faraday effect in a two-dimensional magnetoplasmonic grating with square lattice. The structure consists dielectric magnetic Bi-substituted iron garnet film low thickness (100 nm) coated by perforated gold layer. Enhancement rotation about 2 times is shown experimentally and theoretically despite suppression waveguiding modes. This happens primarily through excitation surface plasmon polaritons propagating at Au-garnet interface two orthogonal...
In previous decades significant efforts have been devoted to increasing the magneto-optical efficiency of iron garnet materials for miniaturization nonreciprocal devices such as isolators and circulators. Elemental substitutions or proper nano-structuring benefit from optical resonances pursued. However, all these approaches still require film thicknesses at least several tens microns deliver useful device applications, suffer narrow bandwidths in case resonance effects. This Letter reports...
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.
The inverse Faraday effect induced in magnetic films by ultrashort laser pulses allows excitation and control of spins at GHz sub-THz frequencies. Frequency the excited magnetization precession is easily tunable external field. On other hand, phase hardly depends on Here we demonstrate an approach for variation incidence angle pulses. In particular, theoretical consideration states that increases with increase small angles this relation a direct proportionality. Experimental studies confirm...
The concept of vector magneto-optical magnetometry is proposed and experimentally demonstrated. key element the magnetometer a transparent high Faraday activity magnetic film with cubic crystal lattice. Magnetocrystalline anisotropy leads to three dimensional trajectory magnetization when rotated by control field. It makes sensitive all components external This field can be found from harmonic composition rotation dependence on azimuth angle demonstrated promising for mapping visualization...
Abstract In this work, we tackle the problem of spatially selective optical excitation spin dynamics in structures with multiple magnetic layers. The 120 fs circularly polarized laser pulses were used to launch magnetization precession an all-dielectric magneto-photonic crystals (MPC) formed by layers sandwiched between and inside two Bragg mirrors. Optical pump-probe experiments reveal triggered via ultrafast inverse Faraday effect amplitude strongly dependent on pump central wavelength:...
We present a newly developed laser-driven shock compression platform at the ID09 beamline of European Synchrotron Radiation Facility (ESRF). This combines custom high-power EKSPLA laser with ESRF's high-energy X-ray pulses to perform in situ, time-resolved diffraction (XRD) measurements materials under well characterized, moderate pressure (up 1 Mbar) and short-duration waves. Its purpose is serve as driver study dynamic pressure, focusing on phase transitions condensed matter. provide...
Spatial symmetry breaking in the magnetoplasmonic system results magneto-optical effects prohibited symmetric structures. The transverse magneto-photonic transmission effect (TMPTE), occurs thereby, which is characterized by a non-zero dependency on magnetism at normal incidence of light. This phenomenon due to inequality forward and backward surface plasmon polariton (SPP) waves metal/dielectric interface non-symmetric plasmonic grating. Here we investigate TMPTE nanostructures with...