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

ITMO University

University of Missouri

Denis Baranov

Göteborgs universitet, Institutionen för fysik

Alexander E. Krasnok

The University of Texas at Austin

ITMO University

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

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Senast uppdaterat

2018-06-12