Highly-efficient longitudinal second-harmonic generation from doubly-resonant AlGaAs nanoantennas
Date
2018-09-17
Authors
Xu, Lei
Rahmani, Mohsen
Smirnova, Daria
Zangeneh Kamali, Khosro
Zhang, Guoquan
Neshev, Dragomir
Miroshnichenko, Andrey
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Publisher
MDPI AG
Abstract
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.
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Keywords
scattering, second-harmonic generation, Mie resonance, nanoantenna, multipolar interference
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Source
Photonics
Type
Journal article
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Open Access
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Creative Commons Attribution (CC BY) license
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