Dielectric chain driven by electron-hole plasma photoexcitation
Paper in proceeding, 2017

All-dielectric nanophotonics based on high-index dielectric nanoparticles became a powerful platform for modern light science, providing many fascinating applications, including high-efficient nanoantennas and metamaterials. High-index dielectric nanostructures are of a special interest for nonlinear nanophotonics, where they demonstrate special types of optical nonlinearity, such as electron-hole plasma photoexcitation, which are not inherent to plasmonic nanostructures. Here, we propose a novel type of highly tunable all-dielectric Yagi-Uda nanoantennas, consisting of a chain of Si nanoparticles exciting by an electric dipole source, which allow tuning of their radiating properties via electron-hole plasma photoexcitation. We theoretically and numerically demonstrate the tuning of radiation power patterns and the Purcell factor by additional pumping of several boundary nanoparticles with relatively low peak intensities of fs-laser.

Author

S. Li

ITMO University

S. I. Lepeshov

ITMO University

Roman S. Saveleev

ITMO University

A. E. Krasnok

The University of Texas at Austin

Denis Baranov

Chalmers, Physics, Bionanophotonics

Proceedings of the International Conference Days on Diffraction 2017, DD 2017

Vol. 2017-December 214-218
978-153864796-7 (ISBN)

2017 International Conference Days on Diffraction, DD 2017
St. Petersburg, Russia,

Subject Categories

Atom and Molecular Physics and Optics

Other Physics Topics

Condensed Matter Physics

DOI

10.1109/DD.2017.8168026

More information

Latest update

12/2/2019