Dielectric Antennas

Antennas are at the heart of modern radio and microwave frequency communications technologies. Researchers have recently extended antenna concepts to the optical frequency domain, greatly enhancing light-matter interactions in a variety of nanophotonic systems (e.g. solar cells, molecular sensors, optical tweezers) [1]. Thus far, optical antennas have primarily been constructed from metallic materials which support plasmonic resonances. In contrast, we have recently exploited the scattering resonances of high-permittivity semiconductor nanowires to realize all-dielectric optical antennas. These systems exhibit a series of multipole resonances (Fig. 1) with unique properties [2] that enable novel antenna-based metamaterials [3], light emitters [4], photodetectors [5], and solar cells [6-8].

Selected Publications

Affiliated Researchers

Nikita Butakov received his Bachelors in Electrical Engineering and Mathematics from SUNY Buffalo in 2013. He is currently pursuing a Ph.D. at the University of California at Santa Barbara. He is a DOD NDSEG Fellow. His research focuses upon using unique metal-dielectric transitions in VO2 to construct tunable metasurfaces.

 

See Publications.