3 papers
physics.optics2026
Amplified up-conversion of electromagnetic waves using time-varying metasurfaces
Fedor Kovalev, Stanislav Maslovski, Abdelghafour Abraray +1
Time-varying metamaterials and photonic time crystals offer a powerful route to wave amplification through temporal modulation of material parameters. Here, we experimentally demon…
physics.optics2025
Tunable bound states in the continuum through hybridization of 1D and 2D metasurfaces
Fedor Kovalev, Mariusz Martyniuk, Andrey Miroshnichenko +1
This work presents a novel approach to create and dynamically control quasi-Bound States in the Continuum (BIC) resonances through the hybridization of 1D and 2D metasurfaces using…
physics.optics2025
Parametric metasurfaces for amplified up-conversion of electromagnetic waves
Fedor V. Kovalev, Ilya V. Shadrivov
Spatiotemporal metasurfaces, characterized by dynamic variations in both space and time, enable functionalities unattainable with passive metasurfaces. In this study, we propose a…