Frequency and Polarization Response of Multipolar Gold Nanoantennae

Multipolarized nanoantennae are promising for terahertz applications due to their ability to support multiple resonance and polarization sensitivity. This study investigates the behavior of multipolarized gold nanoantennae placed on a Si-SiO2 substrate and compares their performance with antennae in...

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Bibliographic Details
Published in:Photonics 2024-12, Vol.11 (12), p.1197
Main Authors: Moreno, Juan R., Ramírez-Elías, Miguel G., Rosales-Gallegos, Israel A., García-Ramírez, Eliseo, Chiwo, Fernando S., Cano-Figueroa, Martha Angélica, Arcos-Gutiérrez, Hugo, Garduño, Isaías E., Domínguez, Carlos A., Aboytes-González, Jesús A., González, Francisco J.
Format: Article
Language:English
Subjects:
Angle of reflection
Antenna design
Antennae
Antennas
Antennas (Electronics)
Communications systems
Comparative analysis
Design
Design optimization
Dipoles
Electric fields
electron beam
Finite element analysis
Geometry
Gold
infrared
lithography
nanoantenna
Nanoantennas
Partial differential equations
Polarization
Resonance
resonance frequency
Scanning electron microscopy
Sensors
Silica
Silicon dioxide
Silicon substrates
Silicon wafers
Simulation
spectroscopy
Spectrum analysis
Terahertz frequencies
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Description
Summary:Multipolarized nanoantennae are promising for terahertz applications due to their ability to support multiple resonance and polarization sensitivity. This study investigates the behavior of multipolarized gold nanoantennae placed on a Si-SiO2 substrate and compares their performance with antennae in air. The results show that the resonance frequency shifts from 27 THz in the air to 26 THz on the SiSiO2 substrate. SEM and FTIR analysis confirmed the antenna dimensions and optical response, with experimental reflectance spectra revealing resonance at 21 THz and 26 THz. The multi-polarized antenna demonstrated stable performance across different polarization angles compared to traditional dipole antennae, making it suitable for various terahertz applications. These findings provide insights into optimizing nanoantenna design for advanced sensors and communication systems.
ISSN:2304-6732
2304-6732
DOI:10.3390/photonics11121197