Engineering Circular Polarization in Chip-integrated High-Tc Superconducting THz Antennas

We report on the control of circularly polarized terahertz (THz) wave in BSCCO superconducting THz antennas with center and edge-bias injected standard pentagonal cavity. The corners of the standard pentagonal cavity were engineered, to form the two-corner-rounded and all-corner-rounded, to investigate how it would affect the circular polarization at the fundamental frequency, at which the fundamental mode emerges. The results indicate that corner-rounding has detrimental effects on the center-injected pentagonal cavity, but has positive effects on the edge-injected pentagonal cavity.