The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Analyzing the modal content of resonant nanostructures using optical methods often becomes a sophisticated problem because of hidden dark resonances, which are uncoupled with far-field modes. The common methods of dark modes spectroscopy base on electron beam systems, such as cathodo-luminescence and, thus, are not very convenient in use. We suggest utilizing Raman spectroscopy to reveal the full...
Recently, we have proposed a novel approach for fabrication of asymmetric metal-dielectric (hybrid) nanoparticles via combination of standard lithography processes and femtosecond laser reshaping of a metal component of the nanoparticle. Here, we study the influence of the geometrical parameters of the hybrid nanoparticle on the reshaping process. We also demonstrate non-reversible tuning of light...
Here, the novel concept of asymmetric metal-dielectric (hybrid) nanoparticles is proposed. The experimental data and the results of numerical simulation of the optical properties of hybrid nanostructures are presented. The change of their optical response after fs-laser modification is shown. The possibility of tuning of hybrid oligomers by the gold nanoparticles reshaping is demonstrated.
In this paper we study the resonant transmission through a waveguide formed by a periodically placed high-index dielectric nanoparticles with a side-coupled resonator. We show that a resonator with high enough Q-factor allows control of the signal transmission through a waveguide. We suggest a practical realization of such scheme that employs a multipole resonance of a dielectric particle with large...
The current state of research in the field of dielectric nanophotonics has been reviewed. “Dielectric nanophotonics” is considered to mean the field of science that studies the interaction of light with nanostructures composed of dielectric nanoparticles with a high value of the refractive index (high-index). These nanostructures allow to control not only the electric but also the magnetic component...
We introduce a novel concept of superdirective nanoantennas based on the generation of higherorder optically-induced magnetic multipoles. Such an all-dielectric nanoantenna can be realized as an optically small spherical dielectric nanoparticle with a notch excited by a point source located in the notch. We also confirm the predicted superdirectivity effect experimentally through scaling to the microwave...
We introduce a novel concept of superdirective nanoantennas based on the generation of higher-order optically-induced magnetic multipoles. Such an all-dielectric nanoantenna can be realized as an optically small spherical dielectric nanoparticle with a notch excited by a point source located in the notch. Proposed superdirectivity effect is not associated with high dissipative losses, because of the...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.