Zobrazeno 1 - 10
of 205
pro vyhledávání: '"Koshelev Kirill"'
Autor:
Toftul, Ivan, Tonkaev, Pavel, Koshelev, Kirill, Lai, Fangxing, Song, Qinghai, Gorkunov, Maxim, Kivshar, Yuri
We demonstrate that chiral response can be achieved in resonant metasurfaces with a monoclinic lattice symmetry (the so-called Bravais oblique lattices) where the mirror symmetry is broken by the lattice asymmetry and also by a substrate, whereas eac
Externí odkaz:
http://arxiv.org/abs/2406.11300
Autor:
Tonkaev, Pavel, Toftul, Ivan, Lu, Zhuoyuan, Qiu, Shuyao, Qin, Hao, Yang, Wenkai, Koshelev, Kirill, Lu, Yuerui, Kivshar, Yuri
Nonlinear chiral photonics explores nonlinear response of chiral structures, and it offers a pathway to novel optical functionalities not accessible through linear or achiral systems. Here we present the first application of nanostructured van der Wa
Externí odkaz:
http://arxiv.org/abs/2406.09729
Publikováno v:
Nanophotonics, Vol 8, Iss 5, Pp 725-745 (2019)
Nonradiating sources of energy have traditionally been studied in quantum mechanics and astrophysics but have received very little attention in the photonics community. This situation has changed recently due to a number of pioneering theoretical stu
Externí odkaz:
https://doaj.org/article/4ee38cf7c2ae44faafca6872ee9470ae
Autor:
Tonkaev, Pavel, Lai, Fangxing, Kruk, Sergey, Song, Qinghai, Scalora, Michael, Koshelev, Kirill, Kivshar, Yuri
Generation of even-order optical harmonics requires noncentrosymmetric structures being conventionally observed in crystals lacking the center of inversion. In centrosymmetric systems, even-order harmonics may arise, e.g., at surfaces but such effect
Externí odkaz:
http://arxiv.org/abs/2403.19385
Autor:
Hamidi, Masoud, Koshelev, Kirill, Gladyshev, Sergei, Valero, Adrià Canós, Hentschel, Mario, Giessen, Harald, Kivshar, Yuri, Weiss, Thomas
Advancing resonant nanophotonics requires novel building blocks. Recently, cavities in high-index dielectrics have been shown to resonantly confine light inside a lower-index region. These so-called Mie voids represent a counterpart to solid high-ind
Externí odkaz:
http://arxiv.org/abs/2312.04082
Publikováno v:
Journal of Optics 26, 055003 (2024)
We generalize the concept of optical scattering matrix ($S$-matrix) to characterize harmonic generation and frequency mixing in planar metasurfaces in the limit of undepleted pump approximation. We show that the symmetry properties of such nonlinear
Externí odkaz:
http://arxiv.org/abs/2311.03686
Publikováno v:
Advanced Photonics, Vol. 5, Issue 6, 064001, 2023
We review the physics and some applications of photonic structures designed for the realisation of strong $\textit{nonlinear chiroptical response}$. We pay much attention to the recent strategy of utilizing different types of $\textit{optical resonan
Externí odkaz:
http://arxiv.org/abs/2308.10475
Autor:
Toftul, Ivan, Fedorovich, Gleb, Kislov, Denis, Frizyuk, Kristina, Koshelev, Kirill, Kivshar, Yuri, Petrov, Mihail
Optically-induced mechanical torque leading to the rotation of small objects requires the presence of absorption or breaking cylindrical symmetry of a scatterer. A spherical non-absorbing particle cannot rotate due to the conservation of the angular
Externí odkaz:
http://arxiv.org/abs/2210.04021
Bound states in the continuum provide a remarkable example of how a simple problem solved about a century ago in quantum mechanics can drive the research on a whole spectrum of resonant phenomena in wave physics. Due to their huge radiative lifetime,
Externí odkaz:
http://arxiv.org/abs/2207.01441
Autor:
Hentschel, Mario, Koshelev, Kirill, Sterl, Florian, Both, Steffen, Karst, Julian, Shamsafar, Lida, Weiss, Thomas, Kivshar, Yuri, Giessen, Harald
Publikováno v:
Light: Science and Applications 2023
Manipulating light on the nanoscale has become a central challenge in metadevices, resonant surfaces, nanoscale optical sensors, and many more, and it is largely based on resonant light confinement in dispersive and lossy metals and dielectrics. Here
Externí odkaz:
http://arxiv.org/abs/2205.07729