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Actively tunable bistable optical Yagi-Uda nanoantenna

Maksymov, Ivan S.; Miroshnichenko, Andrey E.; Kivshar, Yuri S.


We propose and theoretically demonstrate a novel type of optical Yagi-Uda nanoantennas tunable via variation of the free-carrier density of a semiconductor disk placed in a gap of a metallic dipole feeding element. Unlike its narrowband all-metal counterparts, this nanoantenna exhibits a broadband unidirectional emission and demonstrates a bistable response in a preferential direction of the far-field zone, which opens up unique possibilities for ultrafast control of subwavelength light not...[Show more]

CollectionsANU Research Publications
Date published: 2012-04-09
Type: Journal article
Source: Optics Express
DOI: 10.1364/OE.20.008929


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