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Utilizing a polarization sensitive terahertz detection method where the detector is rotated by either 0° or 90° to measure the electric field E p,s (t) of each polarization component,we have characterized the properties of split ring resonators.The strong polarization dependence of the bianisotropic-circular-current-driven and linear-polarization-induced resonances is in excellent agreement with the simulation when the p-polarized terahertz transmission is measured.However,these electromagnetic responses vanish when the s-polarized terahertz transmission is measured.There is only a transmission minimum at 1.64 THz and the terahertz polarization rotation angle of about 90° is observed.The polarized terahertz transmission amplitudes and spectra detected at orthogonal orientations show that these behaviours are probably attributed to the birefringent effect of the sample.
Utilizing a polarization sensitive terahertz detection method where the detector is rotated by either 0 ° or 90 ° to measure the electric field E p, s (t) of each polarization component, we have characterized the properties of split ring resonators. of the bianisotropic-circular-current-driven and linear-polarization-induced resonances is in excellent agreement with the simulation when the p-polarized terahertz transmission is measured. Here, these electromagnetic responses vanish when the s-polarized terahertz transmission is measured. Here is only a transmission minimum at 1.64 THz and the terahertz polarization rotation angle of about 90 ° is observed. polarized terahertz transmission amplitudes and spectra detected at orthogonal orientations show that these behaviors are probably attributed to the birefringent effect of the sample.