Battal, E.Okyay, Ali Kemal2016-02-082016-02-0820130146-9592http://hdl.handle.net/11693/21035Active beam-steering devices near the optical frequencies have long been sought after due to their applications in communication, defense, and display technologies; however, the challenge lies in achieving actively tunable structures near these frequencies. An array of metal-dielectric-metal plasmonic resonators is demonstrated as a dynamic beam-steering device to operate at midinfrared wavelengths. We numerically demonstrate continuous-angle beam steering of 8.75° by making use of tunable properties of silicon as the active dielectric. The proposed device achieves a refractive index insensitive divergence angle and it operates in a 650 nm wide spectral window around 10 μm wavelength. The results of this Letter pave the way to exploiting active beam steering in various applications at midinfrared wavelengths.EnglishApplications in communicationsBeam-steering devicesDisplay technologiesMid-infrared wavelengthsOptical frequencyPlasmonic resonatorsSpectral windowsTunable propertiesDisplay devicesPlasmonsRefractive indexResonatorsMetalsArticle10.1364/OL.38.000983