A5047679113- Plasmonic and Surface Plasmon Research
- Gold and Silver Nanoparticles Synthesis and Applications
- Photonic and Optical Devices
- Photonic Crystals and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Nonlinear Optical Materials Studies
- Near-Field Optical Microscopy
- Metamaterials and Metasurfaces Applications
- Quantum optics and atomic interactions
- Mechanical and Optical Resonators
- Force Microscopy Techniques and Applications
- Quantum Information and Cryptography
- Advanced biosensing and bioanalysis techniques
- Orbital Angular Momentum in Optics
- Nanowire Synthesis and Applications
- Optical Coatings and Gratings
- Advanced Fluorescence Microscopy Techniques
- Advanced Antenna and Metasurface Technologies
- Atomic and Subatomic Physics Research
- Spectroscopy and Laser Applications
- Surface and Thin Film Phenomena
- Advanced Frequency and Time Standards
- Advanced Biosensing Techniques and Applications
- Advanced Fiber Laser Technologies
- Quantum Electrodynamics and Casimir Effect
Institute of Spectroscopy
2014-2024
National Research University Higher School of Economics
2019-2024
Moscow Aviation Institute
2024
Moscow Power Engineering Institute
2024
Russian Academy of Sciences
2008-2020
Institute on Laser and Information Technologies
2015-2017
Troitsk Institute for Innovation and Fusion Research
2011
University of Electro-Communications
2007
We experimentally demonstrate efficient coupling of atomic fluorescence to the guided mode a subwavelength-diameter silica fiber, an optical nanofiber. show that very small number atoms, around nanofiber can be readily observed through single-mode fiber. also such technique enables us probe van der Waals interaction between atoms and surface with high precision by observing excitation spectrum
We realize giant optical nonlinearity of a single plasmonic nanostructure which we call split hole resonator (SHR). The SHR is the marriage two basic elements nanoplasmonics, nanohole and nanorod. A peak field intensity in occurs at tip nanorod inside nanohole. much stronger than those nanohole, because involves contributions from following field-enhancement mechanisms: (1) excitation surface plasmon resonances (2) lightning-rod effect. Here, demonstrate use as highly efficient nonlinear...
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....
We investigate the light transmission through a nanoaperture in metal film deposited on planar metamaterial. An effect of an anomalously high (up to $800%$) is revealed, which we associate with enhancement field at interface structure ``metamaterial--metal-film'' due appearance optical Tamm state. Our numerical results are qualitative agreement experimental data.
We demonstrate the optical medium for surface plasmon-polariton wave (SPP) propagation with ultra low losses corresponding to theoretically limited values. The unique element of is an atomically-flat single-crystalline silver thin film that provides extremely losses. SPP excited on such films (λ = 780 nm) characterized by a length equal 200 µm, which twice longer than previously reported experimental results and corresponds values films.
Abstract We review the interaction of laser light with a single plasmonic nanostructure. Until recently, extremely weak optical response nanostructure had only allowed spectroscopic research on ensembles nanoparticles, where both structural and material parameters vary from one nanoparticle to another is therefore averaged over ensemble. Measurements at level provide an effective tool for investigating fundamental properties nanostructures, allowing insight into mechanisms elementary...
Because of strong light absorption by metals, it is believed that plasmonic nanostructures cannot be used for generating intensive radiation harmonics in the ultraviolet (UV) spectral range. This work presents results investigation nonlinear optical interaction with a single gold nanostructure, split-hole resonator (SHR) under state-of-the-art experimentally realized conditions. To realize all components 6 fs laser pulse several multipole plasmon resonances were simultaneously excited SHR...
We study the third-harmonic generation from metal–dielectric–metal layered fishnet metamaterials and identify experimentally multipolar contributions to generated nonlinear harmonic fields by analyzing radiation patterns of emission. observe that third radiated structure is a result interference electric magnetic dipoles quadrupole modes. Our results provide direct evidence importance higher order multipoles in response metamaterials, opening new opportunities for enhanced nonlinearities...
State-of-the-art fluorescent labels help to measure the virulence of viruses at level single virions and point way mass-available platforms for rapid testing monitoring spread in human animal populations.
In this letter, we report on a particularly strong optical nonlinearity at the nanometer scale in aluminum. A of third order was demonstrated single nanoslit. Single nanoslits different aspect ratio were excited by laser pulse (120 fs) wavelength 1.5 μm, leading predominantly to third-harmonic generation (THG). It has been shown that surface plasmon resonance nanoslit allows realization an effective nanolocalized source radiation. We show also metal film significant advantage nonlinear...
For the first time we have demonstrated an approach to control transmission of light through a single nanohole with use photon crystal microcavity. By 28-fold enhanced in Au film has been experimentally demonstrated. The following advantages: (1) it enables considerably increase nanohole, (2) is unaffected by hole diameter, (3) selective frequency, width resonance ~λ/90, (4) no auxiliary structures are necessary on surface (extra nanoholes, grooves, etc.).
We propose a method of measuring low concentrations fluorescent molecules located in small volume liquid solvent (about 5 μl) based on the Ebbesen effect extraordinary transmission (EOT) light through state-of-the-art plasmonic crystal formed by nanohole array perforated ultra-high-quality Ag film. In method, EOT is realized at fluorescence wavelength detected with absorption wavelength. This approach enables realization high level sensor sensitivity approaching single counting sensors,...
We have predicted theoretically and verified experimentally the occurrence of a giant asymmetry transmission arbitrarily polarized light propagating through linear nonmagnetic optical system that consists metal film with two-dimensional array nanoholes in it is deposited on surface planar dielectric photonic crystal. The caused by two factors: (i) excitation an Tamm state system, (ii) existence many secondary lobes diffraction pattern. Our results are interest for development efficient...
In modern experimental physics the pinhole camera is used when creation of a focusing element (lens) difficult. We have experimentally realized method image construction in atom optics, based on idea an optical camera. With use we built array identical arbitrary-shaped atomic nanostructures with minimum size individual nanostructure down to 30 nm Si surface. The possibility lithography by means atoms, molecules and clusters has been shown.
We propose and experimentally realize subwavelength light localization based on the optical nonlinearity of a single nonlinear element in nanoplasmonics-a split hole resonator (SHR). The SHR is composed two basic elements nanoplasmonics, nanohole, nanorod. A peak field intensity occurs at spot nanostructure. demonstrate use as highly efficient for (i) construction polarization-ultrasensitive nanoelement and, practical application, (ii) building up an all-optical display.
A fundamental problem in the integration of photonic elements is light localization and creation nanolocalized laser sources radiation. new approach miniaturization lasers based on using plasmon fields instead photon fields. Plasmons arise from interaction oscillations electron density electromagnetic that excite them. Accordingly, effects caused by these occur subwavelength region near surfaces, namely, nanometer range. Therefore, allows to overcome diffraction limitation size. Plasmonic...
We experimentally demonstrate a drastic increase in the rate of radiative process nanoscale physical system with implementation three effects: (1) size effect, (2) plasmon resonance and (3) optical Tamm state. As an example system, we choose single nanohole Au film when is embedded photonic crystal specific type that maintains state as - nonlinear photoluminescence. The efficiency photoluminescence increased by more than 10(7) times compare to bulk material.
Due to losses in metals, the propagation length of surface plasmon-polariton (SPP) waves on metal surfaces is small. This severely limits development numerous applications SPP optics: near-infrared spectral region no longer than 200 μm as for plane and all types waveguides. In this work, we show that focusing SPPs allows first time realizing open-type waveguide characterized by long distance effective up 1 mm at a wavelength 780 nm. We focused such can be effectively excited 16 fs laser well...
The fluorescence-based methods of single-molecule optical detection have opened up unprecedented possibilities for imaging, monitoring, and sensing at a level. However, are very slow, making them practically inapplicable. In this paper, we show how to overcome key limitation using the expanded laser spot, excitation in nonfluorescent spectral window biomolecules, more binding fluorescent molecules on biomolecule that increases volume number collected photons. We demonstrate advantages...
We are first to demonstrate a broadband, nanometer-scale, and background-free light source that is based on photoluminescence of single nanohole in an Au film. show with diameter as small 20 nm 200-nm thick film can be used for this purpose. Further development the localized involves use photon-crystal microcavity Q-factor 100 makes it possible create 30-fold enhanced, narrowband tunable narrow directivity radiation.
Photobleaching is one of the basic chemical processes that occur naturally in organic molecules. In this work, we investigate quantum dynamics Cy 7.5 dye molecules optically coupled to Au nanorod particles and experimentally demonstrate decrease photobleaching rate hybrid system. We discover effect a resonance-like behavior not observed before for any type emitter─the reaches minimum suitable number nanoparticle. The manifestation consequence shifts energy levels system caused by change are...
We demonstrate new insights into the interactions between molecules and electromagnetic fields by carefully shaping their energy levels through strong matter–wave coupling, demonstrating a type of fluorescent probe for imaging.