216 citations · 473 across the 24 of their papers we have counts for
20 papers · 1 filter
Mo2TiC2Tx MXene Saturable Absorption for Neural Networks on a Chip
Shadad Watad, Aviad Katiyi, Bar Favelukis +5
MXenes have attracted considerable interest for integrated nonlinear photonics owing to their broadband optical response and chemical tunability, yet investigations have focused pr…
Optoelectronic Reservoir Computing with an On-Chip True-Time-Delay Element
Ahmad Murad, Shadad Watad, Alina Karabchevsky
Compact delay elements remain a central challenge in photonic neuromorphic processors. Here, we demonstrate an optoelectronic delayed-feedback reservoir computer that incorporates…
Bound-state-in-the-continuum (BIC) induced narrow resonances in MXene-coated absorptive dielectric metasurfaces for Methane sensing
Shubhanshi Sharma, Monica Pradhan, Aviad Katiyi +2
Strong light confinement is highly necessary for various applications, including sensing. MXene, a novel and emerging material with a broadband plasmonic response, has been highly…
Phase Topology Stability of an Optical Vortex via an Electrically Controlled Twist-Planar Oriented Liquid Crystal Fresnel Lens
Elena Melnikova, Katsiaryna Pantsialeyeva, Dmitry Gorbach +3
Optical vortices (OVs) have emerged as a revolutionary concept in modern photonics, offering a unique method of manipulating light beyond conventional Gaussian beams. Despite their…
On-chip beam rotators, adiabatic mode converters, and waveplates through low-loss waveguides with variable cross-sections
Bangshan Sun, Fyodor Morozko, Patrick S. Salter +14
Photonics integrated circuitry would benefit considerably from the ability to arbitrarily control waveguide cross-sections with high precision and low loss, in order to provide mor…
Super-resolution imaging and optomechanical manipulation using optical nanojet for non-destructive single-cell research
Alina Karabchevsky, Tal Elbaz, Aviad Katiyi +2
Advanced photonic tools may enable researchers and clinicians to visualize, track, control and manipulate biological processes at the single-cell level in space and time. Biologica…
TiCT MXene Enabled All-Optical Nonlinear Activation Function for On-Chip Photonic Deep Neural Networks
Adir Hazan, Barak Ratzker, Danzhen Zhang +5
Neural networks are one of the first major milestones in developing artificial intelligence systems. The utilisation of integrated photonics in neural networks offers a promising a…
Purcell effect in PT-symmetric waveguides
Alina Karabchevsky, Andrey Novitsky, Fyodor Morozko
This chapter overviews the principles of the spontaneous emission rate increase, that is the Purcell effect, in relation to the photonic parity-time (PT) symmetry. Being focused on…
Simulation and experimental observation of tunable photonic nanojet and photonic hook upon asymmetric illumination of a mesoscale cylinder with mask
Igor V. Minin, Oleg V. Minin, Cheng-Yang Liu +2
In this letter, we report on numerical study, fabrication and experimental observations of tunable photonic nanojet and photonic hook. Here, the curved photonic nanojets (photonic…
Modal Purcell factor in -symmetric waveguides
Fyodor Morozko, Andrey Novitsky, Alina Karabchevsky
We study the spontaneous emission rate of a dipole emitter in -symmetric environment of two coupled waveguides using the reciprocity approach generalized to non-ortho…
Tailored optical potentials for Cs atoms above waveguides with focusing dielectric nano-antenna
Angeleene S. Ang, Alexander S. Shalin, Alina Karabchevsky
Tuning the near-field using all-dielectric nano-antennae offers a promising approach for trapping atoms, which could enable strong single-atom/photon coupling. Here we report the s…
High-Q surface electromagnetic wave resonance excitation in magneto-photonic crystals for super-sensitive detection of weak light absorption in near-IR
O. V. Borovkova, D. O. Ignatyeva, S. K. Sekatskii +2
Mid-infrared spectrum can be recorded from almost any material making the mid-infrared spectroscopy an extremely important and widely used sample characterization and analytical te…
Magnetic Octupole Response of Dielectric Oligomers
Pavel D. Terekhov, Andrey B. Evlyukhin, Dmitrii Redka +3
The development of new approaches to tuning the resonant magnetic response of simple all-dielectric nanostructures is very important in modern nanophotonics. Here we show that a re…
Differential extinction of Vibrational Molecular Overtone Transitions with Gold Nanorods and Non-Trivial Surface Enhanced Near-IR Absorption (SENIRA)
Daler R. Dadadzhanov, Tigran A. Vartanyan, Alina Karabchevsky
Resonant coupling between plasmonic nanoantennas and molecular vibrational excitations is employed to amplify the weak overtone transitions that reside in the near-infrared. We exp…
Broadband plasmonic nanoparticles: fabrication, optical properties, and implications in liquid light chemiluminescence enhancement
Daler R. Dadadzhanov, Tigran A. Vartanyan, Peter S. Parfenov +2
Chemiphores are entities, which exhibit wide-band light emission without any external light source but just due to the chemical reaction resulting in the chemiluminescence effect.…
Optomechanical manipulation with hyperbolic metasurfaces
Aliaksandra Ivinskaya, Natalia Kostina, Alexey Proskurin +7
Auxiliary nanostructures introduce additional flexibility into optomechanical manipulation schemes. Metamaterials and metasurfaces capable to control electromagnetic interactions a…
Strong asymmetry of forward scattering effect from dielectric cubic nanoantenna in lossless media
Pavel D. Terekhov, Hadi K. Shamkhi, Egor Gurvitz +4
Dielectric photonics platform provides unique possibilities to control light scattering via utilizing high-index dielectric nanoantennas with peculiar optical signatures. Despite t…
PT-symmetry breaking in multilayers with resonant loss and gain locks light propagation direction
Denis Novitsky, Alina Karabchevsky, Andrei Lavrinenko +2
Using the Maxwell-Bloch equations for resonantly absorbing and amplifying media, we study the temporal dynamics of light propagation through the PT-symmetric structures with altern…
Transverse scattering and generalized Kerker effects in all-dielectric Mie-resonant meta-optics
Hadi K. Shamkhi, Kseniia V. Baryshnikova, Andrey Sayanskiy +7
All-dielectric resonant nanophotonics lies at the heart of modern optics and nanotechnology due to the unique possibilities to control scattering of light from high-index dielectri…
Giant absorption of light by molecular vibrations on a chip
A. Karabchvesky, A. V. Kavokin
Vibrational overtone spectroscopy of molecules is a powerful tool for drawing information on molecular structure and dynamics. It relies on absorption of near infrared radiation (N…