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Title : Terahertz Resonant Dipole Nanoantennas
Company : Comsol
Date : 13-Apr-2014
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Downloads : 6

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Featured Paper by S. Tuccio , A. Alabastri, L. Razzari, A. Toma, C. Liberale, R. Proietti Zaccaria, F. De Angelis, G. Das & E. diFabrizio

Nanoantennas have been successfully employed in a wide set of applications. We show the possibility to expand usual nanoantenna functionalities in the THz domain with a gold dipole nanoantenna. We considered an array of aligned planar gold nanoantennas over a silicon substrate. The high near field enhancement, localized at the device ends, indicates potential uses for THz spectroscopy and nonlinear optics. Far field properties of the gold nanoantennas are quantified with the resonance frequency positions of absorption and scattering efficiencies. The high field enhancement could be employed for the detection of few molecules with THz spectroscopy, since the effective absorption cross section of a molecule close to the nanoantenna ends would then be enhanced by several orders of magnitude.
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