123 citations · 312 across the 10 of their papers we have counts for
10 papers
Multi-mode Photonic Time Crystals Based on Time-Modulated Metasurface Waveguides
Z. Li, M. S. Mirmoosa, V. Asadchy +1
Photonic time crystals are electromagnetic media with periodically time-varying parameters, enabling momentum band gaps, parametric amplification, and frequency conversion beyond w…
Non-Foster Photonic Time Crystals
Zeyuan Li, Mohammad Sajjad Mirmoosa, Silvio Hrabar +2
Photonic time crystals (PhTCs) are spatially uniform media whose material parameters vary periodically in time, opening momentum bandgaps within which the fields of electromagnetic…
Parametric Mie resonances and directional amplification in time-modulated scatterers
V. Asadchy, A. G. Lamprianidis, G. Ptitcyn +7
We provide a theoretical description of light scattering by a spherical particle whose permittivity is modulated in time at twice the frequency of the incident light. Such a partic…
Scattering from spheres made of time-varying and dispersive materials
G. Ptitcyn, A. G. Lamprianidis, T. Karamanos +8
Exploring the interaction of light with time-varying media is an intellectual challenge that, in addition to fundamental aspects, provides a pathway to multiple promising applicati…
Space-Time Metasurfaces for Perfect Power Combining of Waves
Xuchen Wang, Viktar S. Asadchy, Shanhui Fan +1
In passive linear systems, complete combining of powers carried by waves from several input channels into a single output channel is forbidden by the energy conservation law. Here,…
Non-Scattering Multi-Mirror Systems for Field Localization
F. S. Cuesta, V. S. Asadchy, M. S. Mirmoosa +1
Resonators composed of two mirrors, such as Fabry-Perot cavities, provide a simple but effective approach to achieve wave transmission with high finesse. Further increase of the qu…
Unlimited Accumulation of Electromagnetic Energy Using Time-Varying Reactive Elements
M. S. Mirmoosa, G. A. Ptitcyn, V. S. Asadchy +1
Accumulation of energy by reactive elements is limited by the amplitude of time-harmonic external sources. In the steady-state regime, all incident power is fully reflected back to…
Multifunctional Cascaded Metamaterials: Integrated Transmitarrays
Amr A. Elsakka, Viktar S. Asadchy, Ihar A. Faniayeu +2
Control of electromagnetic waves using engineered materials is very important in a wide range of applications, therefore there is always a continuous need for new and more efficien…
Metasurfaces for perfect and full control of refraction and reflection
V. Asadchy, M. Albooyeh, S. Tcvetkova +2
In this talk we present and discuss a new general approach to the synthesis of metasurfaces for full control of transmitted and reflected fields. The method is based on the use of…
One-way transparent sheets
Younes Ra'di, Viktar Asadchy, Sergei Tretyakov
In this paper we introduce the concept of metasurfaces which are fully transparent when looking from one of the two sides of the sheet and have controllable functionalities for wav…