[14a-211-1~8] 3.9 テラヘルツ全般

▼ [14a-211-7] Angular Characteristic of Terajet Generated From Dielectric Cuboid in THz Region

〇(DC)NguyenPham HaiHuy¹、Hisatake Shintaro¹、Minin Igor V.²、Minin Oleg V.²、Nagatsuma Tadao¹ (1.Osaka Univ.、2.National Research Tomsk State Univ.)

キーワード：terajet, dielectric cuboid, THz imaging

Recently, an experimental confirmation of the generation of a jet in the terahertz (THz, 0.1-10 THz) region, namely terajet, from a mesoscale dielectric cuboid has been proposed. The subwavelength hotspot generated from the cuboid is promising for high-resolution THz imaging applications. When exploiting the cuboid in practical applications, how the alignment of the cuboid affects the generated terajet needs to be investigated. In this study, the output terajet angle and the full width at half maximum (FWHM), which determines the quality of the subwavelength-focusing property, under different angle of illumination are characterized experimentally by our THz-wave visualization system, based on electro-optic (EO) detection technique.