Ultrafast Tunable Hybrid Yagi-Uda Nanoantenna
Paper i proceeding, 2017

We study radiation from Yagi-Uda nanoantennas composed of metal-dielectric core-shell nanoparticles. We have found an interesting operation regime in such nanoantennas determined by their hybrid nature. This regime rests on the excitation of the Van Hove singularity, supporting high values of directivity and Purcell factor within the same narrow frequency range. In this regime, a strong dynamical tuning of the emission pattern via electron-hole plasma photoexcitation by a femtosecond pumping can be achieved.

Författare

Roman S. Savelev

ITMO University

Olga N. Sergaeva

University of Missouri

ITMO University

Denis Baranov

Chalmers, Fysik, Bionanofotonik

Alexander E. Krasnok

ITMO University

The University of Texas at Austin

Andrea Alu

The University of Texas at Austin

2017 PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM - SPRING (PIERS)

3854-3858

Progress in Electromagnetics Research Symposium - Spring (PIERS)
St Petersburg, Russia,

Ämneskategorier

Atom- och molekylfysik och optik

Fusion, plasma och rymdfysik

Den kondenserade materiens fysik

DOI

10.1109/PIERS.2017.8262431

Mer information

Senast uppdaterat

2019-07-25