Multipolar analysis of second-harmonic generation in GaAs nanoparticles grown along different crystallographic directions
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2020-12-08
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Conference Paper
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Abstract
We perform multipolar analysis of second-harmonic generation (SHG) from gallium arsenide (GaAs) nanoantennas grown along different crystallographic directions and discuss their specifics. In particular, analysis of the nonlinear response of nanoantennas grown along the (110) axis based on the Lorentz lemma shows that such nanoantennas generate multipoles with only odd azimuthal index m. This feature of (110)-GaAs nanoantennas provides the best forward/backward directivity as compared to their (100) and (111) counterparts. Using numerical modeling we determine parameters of the cylindrical nanoantenna to achieve optical switching in the nonlinear regime by rotating the pump polarization. We then experimentally demonstrate the nonlinear switching between forward and backward SHG emissions from (110)-grown GaAs nanodisks.
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published
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2300
Pages / Article No.
20131
Publisher
American Institute of Physics
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5th International Conference on Metamaterials and Nanophotonics (METANANO 2020) (virtual)
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Due to the Coronavirus (COVID-19) the conference was conducted virtually.
Funding
150609 - Nonlinear Core-Shell Nanomaterials for Photonic Applications (SNF)
163916 - All-Dielectric and Hybrid Nanostructures for Biophotonic Applications (SNF)
179966 - All-dielectric nanowires as building blocks for nonlinear photonics (SNF)
714837 - Second-Order Nano-Oxides for Enhanced Nonlinear Photonics (EC)
163916 - All-Dielectric and Hybrid Nanostructures for Biophotonic Applications (SNF)
179966 - All-dielectric nanowires as building blocks for nonlinear photonics (SNF)
714837 - Second-Order Nano-Oxides for Enhanced Nonlinear Photonics (EC)