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
ITMO University
O.N. Sergaeva
University of Missouri
Denis Baranov
Chalmers, Fysik
A. E. Krasnok
ITMO University
The University of Texas at Austin
A. Al'u
The University of Texas at Austin
2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings
Vol. Part F43-CLEO_AT 2017
978-194358027-9 (ISBN)
2017 Conference on Lasers and Electro-Optics, CLEO 2017
San Jose, USA,
San Jose, USA,
Ämneskategorier
Fysik
DOI
10.1364/CLEO_AT.2017.JTh2A.13