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Título: | Numerical Study on Mie Resonances in Single GaAs Nanomembranes |
Autor: | Raya, Andrés M. CSIC ORCID; Fuster, David CSIC ORCID ; Llorens Montolio, José Manuel CSIC ORCID | Palabras clave: | Mie resonances GaAs nanomembranes Dielectric nanophotonics Nanoantennas |
Fecha de publicación: | 5-jun-2019 | Editor: | Multidisciplinary Digital Publishing Institute | Citación: | Nanomaterials 9(6): 856 (2019) | Resumen: | GaAs nanomembranes grown by selective area epitaxy are novel structures. The high refractive index of GaAs makes them good candidates for nanoantennas. We numerically studied the optical modal structure of the resonator. The nanomembrane geometry introduces a strong light-polarization dependence. The scattering is dominated by an electric dipole contribution for polarization along the nanomembrane long dimension and by a magnetic dipole contribution in the orthogonal direction. The dependence on the geometry of the resonances close to the GaAs band gap was modeled by a single coefficient. It describes the resonance shifts against up-to 40% changes in length, height, and width. We showed that the nanomembranes exhibited field enhancement, far-field directionality, and tunability with the GaAs band gap. All these elements confirm their great potential as nanoantennas. | Descripción: | This article belongs to the Special Issue Dielectric Nanophotonics and Their Applications. | Versión del editor: | http://doi.org/10.3390/nano9060856 | URI: | http://hdl.handle.net/10261/185048 | DOI: | 10.3390/nano9060856 | E-ISSN: | 2079-4991 |
Aparece en las colecciones: | (IMN-CNM) Artículos |
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nanomaterials-09-00856.pdf | 5,14 MB | Adobe PDF | Visualizar/Abrir |
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