A5016004499- Photonic and Optical Devices
- Plasmonic and Surface Plasmon Research
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Fiber Laser Technologies
- Advanced Fiber Optic Sensors
- Photonic Crystals and Applications
- Semiconductor Lasers and Optical Devices
- Photonic Crystal and Fiber Optics
- Laser-Matter Interactions and Applications
- Near-Field Optical Microscopy
- Spectroscopy and Laser Applications
- Molecular Junctions and Nanostructures
- Gas Sensing Nanomaterials and Sensors
- Thermal Radiation and Cooling Technologies
- Metamaterials and Metasurfaces Applications
- Quantum Electrodynamics and Casimir Effect
- Optical Systems and Laser Technology
- Optical properties and cooling technologies in crystalline materials
- Optical Coatings and Gratings
- Neural Networks and Reservoir Computing
- Machine Learning and Algorithms
- Transition Metal Oxide Nanomaterials
- Quantum Information and Cryptography
- Optical Network Technologies
- Analytical Chemistry and Sensors
Ferdinand-Braun-Institut
2023-2025
Kirchhoff (Germany)
2025
All Russia Research Institute of Automatics
2014-2023
Moscow Institute of Physics and Technology
2014-2022
Institute of Radio-Engineering and Electronics
2019-2022
National Research University Higher School of Economics
2016-2019
Institute of Theoretical and Applied Electrodynamics
2014-2019
Rosatom (Russia)
2019
Institute of Spectroscopy
2016
Moscow State Institute of Electronics and Mathematics
2016
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...
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 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.
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...
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...
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...
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...
Deep learning models, with a prerequisite of large databases, are common approaches in applying machine for inverse design photonics. For these less expensive, approximate methods usually used to generate which limit their applications. In this study, we compare the performance data-efficient (ML) models predicting characteristics surface Bragg gratings semiconductor ridge waveguides. We employ 3D finite-difference time-domain method is very accurate but time-consuming database. analyze...
Abstract Acquiring a substantial number of data points for training accurate machine learning (ML) models is big challenge in scientific fields where collection resource-intensive. Here, we propose novel approach constructing minimal yet highly informative database ML complex multi-dimensional parameter spaces. To achieve this, mimic the underlying relation between output and input parameters using Gaussian process regression (GPR). Using set known data, GPR provides predictive means...
This study focuses on accurately fit of the main and side lobes reflectance obtained through precise 3D FDTD simulations using coupled-mode-theory. approach based surrogate modeling reduces reliance time-consuming simulations.
Here we introduce efficient machine learning models trained on a 3D FDTD simulation-based database to predict Bragg grating characteristics from the main and side lobes of reflectance spectra fitted by coupled mode theory.
We demonstrate a broadband As2S3-based fiber coupler operating up to the 5.4 μm wavelength range developed by using fused biconical tapering technique. During manufacturing process, real-time data monitoring of coupling ratio was at 2.64 μm. The measurement minimal excess loss less than 1 dB in 5-5.4 Also, bend numerically analyzed determine optimal geometric parameters.
We study a surface plasmon polariton mode that is strongly confined in the transverse direction and propagates along periodically nanostructured metal-dielectric interface. show wavelength of this determined by period structure, may therefore, be orders magnitude smaller than plasmon-polariton propagating flat surface. This exists frequency region which sum real parts permittivities metal dielectric positive, polaritons do not exist on The propagation length new can reach several dozen...
Although nanolasers typically have low $Q$ factors and high lasing thresholds, they been successfully implemented with various gain media. Intuitively, it seems that an increase in the coefficient would improve characteristics of nanolasers. For a plasmonic nanolaser---in particular, distributed feedback laser---we propose self-consistent model takes into account both spontaneous emission multimode character laser generation to show for given pumping strength, has optimal value at which...
A novel method is proposed for highly sensitive surface spectroscopy based on hole burning in the plasmon polariton (SPP) quantum generator spectrum due to absorption by analyzed molecules or clusters located inside SPP cavity. The calculated with an account of inhomogeneous broadening variations active medium transition frequency. influence sample generation demonstrated. realization a 2D cavity proposed. It shown that sufficiently large qualitatively different from usual laser. In...
Solving the challenging problem of amplification and generation an electromagnetic field in nanostructures enables us to implement many properties at nanoscale practical applications. A first-principles quantum-mechanical consideration such a is sufficiently restricted by exponentially large number degrees freedom does not allow electromagnetic-field dynamics be described if it involves high interacting atoms modes field. Conversely, classical description fields incorrect due level quantum...
Plasmon spectroscopy methods are highly sensitive to the small volumes of material due subwavelength localization light increasing light-matter interaction. Recent research has shown a high potential plasmon quantum generator (spaser) or amplifier (sped) for sensing in infrared optical region. Trinitrotoluene (TNT) molecules fingerprints considered as an example. Basing on Lindblad equations, we implement full mechanical theory graphene investigate how amount absorbing atoms influences...
Abstract This study discusses the importance of accurately calculating optical response Bragg gratings and challenges associated with 3D finite-difference time-domain (FDTD) method for simulating large-scale structures. The grating section in monolithic extended cavity diode lasers is substantial size, making FDTD simulations computationally challenging due to their complexity. In order assess accuracy simulations, we compare them experimental results. Using a precise model design, involving...
In the paper we investigate characteristics of a short-cavity fiber laser based on new silica with composite erbium-doped phosphosilicate core without additional co-doping ytterbium. For first time, operation such in continuous-wave lasing mode 1490-nm pump is shown. The self-Q-switching mode, changing to increasing pumping power, demonstrated.