Nanoscale Control of the Radiation Properties of Coupled Nanoantennas
Authors: Locatelli A., Boscolo S., Capobianco A.-D., Midrio M., De Angelis C.
Autors Affiliation: Dipartimento di Ingegneria dell’Informazione, Università degli Studi di Brescia, Brescia 25123, Italy; Dipartimento di Ingegneria Elettrica, Gestionale e Meccanica, Università degli Studi di Udine, Udine 33100, Italy; Dipartimento di Ingegneria dell’Informazione, Università degli Studi di Padova, Padova 35131, Italy
Abstract: The peculiar properties of a pair of nanoantennas fed at a gap region have been studied. The possibility of controlling the radiation pattern at the nanoscale is demonstrated: indeed, unidirectional radiation can be obtained by placing two identical nanorods at a distance which is in the order of lambda/20 (in stark contrast with the typical quarter-wavelength spacing of Yagi-Uda antennas), and scales down with increasing effective index of the plasmonic mode of the single cylindrical rod. Powerful techniques borrowed from electrical engineering have been applied in order to justify in an elegant and straightforward way the behavior of the nanostructure at optical frequencies.
Journal/Review: IEEE PHOTONICS TECHNOLOGY LETTERS
Volume: 23 (20) Pages from: 1541 to: 1543
More Information: This work was supported by Fondazione Cariplo, project METAMETA (Grant 2010-0595).KeyWords: Antenna theory; integrated optics; nanoelectronics; nanophotonics; plasmonsDOI: 10.1109/LPT.2011.2163931Citations: 3data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2023-01-22References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here