Highly-Efficient Longitudinal Second-Harmonic Generation from Doubly-Resonant AlGaAs Nanoantennas

We design an asymmetric nonlinear optical nanoantenna composed of a dielectric nanodisc and an adjacent nanobar. The proposed composite structure made of AlGaAs exhibits resonant response at both the fundamental and doubled frequencies. Being driven by the strong magnetic dipole resonance at the pum...

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Bibliographic Details
Published in:Photonics
Main Authors: Lei Xu, Mohsen Rahmani, Daria Smirnova, Khosro Zangeneh Kamali, Guoquan Zhang, Dragomir Neshev, Andrey E. Miroshnichenko
Format: Article
Language:English
Published: MDPI AG 2018-09-01
Subjects:
scattering
second-harmonic generation
Mie resonance
nanoantenna
multipolar interference
Online Access:http://www.mdpi.com/2304-6732/5/3/29
Description
Summary:We design an asymmetric nonlinear optical nanoantenna composed of a dielectric nanodisc and an adjacent nanobar. The proposed composite structure made of AlGaAs exhibits resonant response at both the fundamental and doubled frequencies. Being driven by the strong magnetic dipole resonance at the pump wavelength and a high-quality mode at the harmonic wavelength, the efficient second-harmonic radiation is generated predominantly along the vertical directions under the normally incident plane-wave excitation.
ISSN:2304-6732

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