[12p-PA1-1~18] 3.9 Terahertz technologies

[12p-PA1-12] Phase controle of terahertz wave propagating in waveguide coupled with bulls-eye structure

〇Seigo Ohno^1,2, Yu Tokizane^2,3, Jun-ichi Shikata⁴, Hiroaki Minamide² (1.Tohoku Univ., 2.RIKEN, 3.pLED, Tokushima Univ., 4.Nihon Univ.)

Keywords:Bulls-eye, waveguide, phase control

A bulls-eye structure, in which a sub-wavelength scale pore on a metal substrate is surrounded by a concentric circular grating structure, has been known to show the anomalous transmission effect for a normal incident electromagnetic (EM) wave when the EM wave resonates to the grating structure. So far, we have proposed its application to an antenna for a THz wave. We will present a waveguide structure coupled with a bulls-eye which shows possibility to control the phase of THz-wave propagating in the waveguide part via the polarization state of the incident wave to the bulls-eye part.