Nonlinear core-shell yagi-uda nanoantenna for highly tunable directive emission
Paper i proceeding, 2017

We propose a novel type of tunable Yagi-Uda nanoantenna composed of metal-dielectric (Ag- Ge) core-shell nanoparticles. By choosing the appropriate nanoantenna parameters we excite a Van Hove singularity, supporting high values of directivity and Purcell factor within the same narrow frequency range. Our analysis reveals the possibility of flexible dynamical tuning of the hybrid nanoantenna emission pattern via electron-hole plasma excitation by additional fs-laser signal pulses.

Författare

R.S. Savelev

Saint Petersburg National Research University of Information Technologies, Mechanics and Optics University ITMO

O.N. Sergaeva

University of Missouri-Columbia

Denis Baranov

Chalmers, Fysik

A. E. Krasnok

Saint Petersburg National Research University of Information Technologies, Mechanics and Optics University ITMO

The University of Texas at Austin

A. Al'u

The University of Texas at Austin

Optics InfoBase Conference Papers

Vol. Part F43-CLEO_AT 2017

Ämneskategorier

Fysik

DOI

10.1364/CLEO_AT.2017.JTh2A.13

ISBN

9781943580279