Figure 4. Analysis of polarization state in transmission and reflection from the proposed all-dielectric chiral structure.
(a) RCP incidence. (b) LCP incidence. The amplitude of the transmitted and reflected electrical field is encoded by the color bar. (c) RCP and LCP components spectra in transmission when a RCP incident light transmits through a left-handed metasurface. (d) RCP and LCP components spectra in reflection when a LCP incident light is reflected from the left-handed metasurface. (e) Polarization ellipticity (η) and azimuth angle (θ) of the transmitted light with a linearly polarized incident light at wavelength 1.5 μm; (f) Polarization ellipticity (η) and azimuth angle (θ) of the reflected light with a linearly polarized incident light at wavelength 1.5 μm. Parameters are P = 0.98 μm, L1 = 0.22 μm, L2 = 0.50 μm, W = 0.32 μm and H = 0.215 μm.