Abstract

Terahertz (THz) plasmonic devices typically consist of metallic structures with micrometer- or subwavelength-scaled units, and lead to excellent optical properties, such as the field confinement and enhancement [1]. Such unique performances are attractive and considered as the features of novel photonic devices in THz frequency region. However, the confined waveguide field normally results in the strong waveguide attenuation and dispersion [2], consequently hindering the possible applications of THz plasmonic devices. Therefore, engineering the periodic metal structure of a THz plasmonic device to transport THz waves with high field confinement and low loss is urgently requested currently. In this presentation, one THz plasmonic slab waveguide based on a free-standing metal rod array (MRA) is demonstrated, and the waveguide modal field tailored via the MRA parameters is successfully achieved [3].

© 2017 Japan Society of Applied Physics, Optical Society of America