A5066593111- Plasmonic and Surface Plasmon Research
- Photonic Crystals and Applications
- Photonic and Optical Devices
- Gold and Silver Nanoparticles Synthesis and Applications
- Metamaterials and Metasurfaces Applications
- Advanced Fiber Laser Technologies
- Quantum Information and Cryptography
- Quantum optics and atomic interactions
- Laser-Matter Interactions and Applications
- Orbital Angular Momentum in Optics
- Optical Coatings and Gratings
- Photonic Crystal and Fiber Optics
- Semiconductor Lasers and Optical Devices
- Near-Field Optical Microscopy
- Quantum Mechanics and Non-Hermitian Physics
- Advanced Fiber Optic Sensors
- Gas Sensing Nanomaterials and Sensors
- Molecular Junctions and Nanostructures
- Spectroscopy and Laser Applications
- Magneto-Optical Properties and Applications
- Optical Network Technologies
- Electromagnetic Scattering and Analysis
- Quantum chaos and dynamical systems
- Transition Metal Oxide Nanomaterials
- Advanced Antenna and Metasurface Technologies
All Russia Research Institute of Automatics
2015-2024
Institute of Radio-Engineering and Electronics
2019-2024
Institute of Theoretical and Applied Electrodynamics
2014-2024
Moscow Institute of Physics and Technology
2014-2023
Russian Academy of Sciences
2006-2020
Rosatom (Russia)
2019
National Research University Higher School of Economics
2016
Institute of Spectroscopy
2016
Moscow State Institute of Electronics and Mathematics
2016
Queens College, CUNY
2014
We review quantum mechanical and optical pseudo- Hermitian systems with an emphasis on PT-symmetric important for optics electrodynamics. One of the most
We demonstrate the existence of a spectrally narrow localized surface state, so-called optical Tamm at interface between one-dimensional magnetophotonic and nonmagnetic photonic crystals. The state is located inside band gaps each crystals comprising this structure. This associated with sharp transmission peak through sample responsible for substantial enhancement Faraday rotation corresponding wavelength. experimental results are in excellent agreement theoretical predictions.
We study the optical properties of a photonic crystal interfaced with uniform medium negative dielectric constant or another crystal. show that, at such an interface, nonpropagating surface states may arise. These result in sharp feature transmission and reflection spectra system. also that interfacing magnetic nonmagnetic crystals gives rise to giant Faraday Kerr effects.
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The propagation of surface electromagnetic waves along photonic crystal (PC) boundaries is examined. It shown that in a number cases, these are backward waves. nature states localized at the PC boundary discussed; transfer no energy (their tangential wave zero). An analogy with well-known Tamm and Shockley solid state physics drawn. case PC, both types can be regarded as states. Experimental results on observation presented. A system using an external magnetic field to control considered.
We discuss phase transitions in $\mathcal{PT}$-symmetric optical systems. show that, due to frequency dispersion of the dielectric permittivity, an system can have $\mathcal{PT}$ symmetry at isolated points only. An assumption existence a continuous interval violates causality principle. Therefore, ideal symmetry-breaking transition cannot be observed by simply varying frequency.
We consider exciting surface plasmon polaritons in the Kretschmann configuration. Contrary to common belief, we show that a plane wave incident at an angle greater than of total internal reflection does not excite polaritons. These excitations do arise, however, if light forms narrow beam composed infinite number waves. The polariton is formed geometrical edge as result interference reflected
Fiber optic sensors are applied in industry, remote sensing, environmental monitoring and healthcare. A special place is occupied by tilted fiber Bragg gratings, which can significantly expand the capabilities provided standard sensors. But these gratings have complex spectral responses, therefore, data processing becomes a critical task for achieving maximum performance. In this paper, machine learning methods of plasmonic sensor based on grating were first time measurement small refractive...
Spontaneous symmetry breaking is a source of the phase transition in variety physical systems including such as non-Hermitian. It has recently been demonstrated that so-called exceptional points, which are singularities non-Hermitian systems, separate areas with symmetrical and asymmetrical eigenstates. Such separation evidence transitions taking place at points. In this paper, we experimentally demonstrate exceptional-point system two coupled magnonic waveguides by dipole-dipole interaction...
We demonstrate intracavity plasmonic laser spectroscopy using a created from periodically perforated silver film with liquid gain medium. An active zone of the is formed by highly elongated spot pumping. This results in significantly more efficient diffusive mixing dye molecules, which suppresses effect their bleaching, and ability to reduce volume medium as little 400 nl. use this design for stable multiple measurements that it effective spaser sensor detection an absorptive at 0.07 ppm....
The mixing formulas for calculating the effective parameters of composite materials with inclusions having a negative permeability or permittivity are analyzed. problems appearing when various utilized were outlined, and computation algorithms yielding physically meaningful solutions described. problem calculation refractive index media arbitrary values is discussed.
We demonstrate that microscale tailoring of surfaces magnetophotonic crystals provides an approach to engineer responses known materials. In particular, we study states are spatially localized at the interface between and photonic crystals. Such optical analog Tamm long in solid-state physics. The spectrally located inside band gaps associated with a sharp transmission peak spectra system. Substantial enhancement Faraday rotation for wavelength state is experimentally observed attributed...
We show that net amplification of surface plasmons is achieved in channel a metal plate due to nonradiative excitation by quantum dots. This makes possible lossless plasmon transmission lines the as well and generation coherent plasmons. As an example, ring spaser considered.
We show that depending on the values of coupling constants, two scenarios for stationary behavior a chain interacting spasers may be realized: (1) all are synchronized and oscillate with unique phase or (2) nonlinear autowave travels along chain. In latter scenario, traveling wave is harmonic, unlike excitations in other known systems. Due to nature system, any initial distribution spaser states evolves into one these steady states.
We demonstrate that when the frequency of external field differs from lasing an autonomous spaser, spaser exhibits stochastic oscillations at low intensity. The plasmon lock to only amplitude exceeds a threshold value. find region values and detuning (the Arnold tongue) for which synchronizes with wave.
We demonstrate that interacting spasers arranged in a 2D array of arbitrary size can be mutually synchronized allowing them to supperradiate. For arrays smaller than the free space wavelength, total radiated power is proportional square number N spasers. larger arrays, radiation linear N. However, emitted beam becomes highly directional with intensity N^2 direction perpendicular plane array. Thus, spasers, which mainly amplify near fields, become an efficient source far field when they are into
A pulsed regime of short-cavity, heavily erbium-doped fiber lasers is high interest for its possible applications in telecommunications and sensorics. Here, we demonstrate compare these two configurations, a distributed feedback laser classic Fabry–Perot-type laser. We have managed to create that function stably with cavities as small 50 mm. Pulse properties such amplitude, frequency, duration are good agreement our theoretical analysis, which takes into account spontaneous emission. report...
Optical gas sensing attracts growing attention in the recent years. This is governed by progressive availability of optical nanostructures fabrication and complex techniques spectrum processing. In present paper, a room-temperature humidity sensor based on hydrophilic polymer Nafion theoretically experimentally investigated. Sensor geometry optimized for maximum sensitivity an angle-resolved ATR dip Kretschmann configuration. The reflectance attributed to 2nd order layer leaky waveguide mode...
In recent years, we have been witnessing the intensive development of optical gas sensors. Thin palladium and platinum films as well tungsten trioxide with or catalysts are widely used for hydrogen detection, constants these materials required sensor development. We report parameters retrieved from a set ellipsometric transmission spectra electron-beam evaporated palladium, platinum, films. The were 81 nm, 162 515 nm thick metal thin 5-7 nm. Ultrathin shown to be successfully described by...
Nanostructure based on a dielectric grating (Al2O3), gasochromic oxide (WO3) and catalyst (Pd) is proposed as hydrogen sensor working at the room temperature. In fabricated structure, Pd film was thin 1 nm that allowed significant decrease in optical absorption. A high-Q guided-mode resonance observed transmission spectrum normal incidence utilized for detection. The spectra were measured 0-0.12% of synthetic air (≈ 80% [Formula: see text] 20% text]). detection limit below 100 ppm...
In the approach to stationary regime, a surface plasmon amplification by stimulated emission of radiation exhibits complicated and highly nonlinear dynamics with anharmonic oscillations [M. I. Stockman, J. Opt. 12, 024004 (2010)]. We demonstrate that these are due Rabi quantum dot in field nanoparticle. show may or not arise depending on initial conditions.
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