title: Nanoradar based on nonlinear dimer nanoantenna.
abstract: We introduce the concept of a nanoradar based on the operation of a nonlinear plasmonic nanoantenna. The nanoradar action originates from modulational instability occurring in a dimer nanoantenna consisting of two subwavelength nonlinear nanoparticles. Modulation instability causes a dynamical energy exchange between the nanoantenna eigenmodes resulting in periodic scanning of the nanoantenna scattering pattern. Such nanoradar demonstrates a wide scanning sector, low operation threshold, and ultrafast time response being potentially useful for many applications in nanophotonics circuitry.
authors.affiliation: National Research University of Information Technologies, Mechanics and Optics, St. Petersburg, Russia. n.lapshina@phoi.ifmo.ru
authors.forename: Nadezhda
authors.initials: N
authors.lastname: Lapshina
authors.forename: Roman
authors.initials: R
authors.lastname: Noskov
authors.forename: Yuri
authors.initials: Y
authors.lastname: Kivshar