Enhanced chiral response from the Fabry–Perot cavity coupled meta-surfaces

Yang Ze-Jian^{1, 2}, Hu De-Jiao^{1, 2}, Gao Fu-Hua^{1, 2, †,}, Hou Yi-Dong^{1, 2}

Normalized spectra of the reflection efficiencies each as a function of incident wavelength and cavity length for R₋₋ (a), R₊₊ (b), R₊₋/R₋₊ (c), white solid and orange lines represent the FP cavity mode and LSPR mode respectively. The purple circle indicates the design in the previous section. (d) CD spectra each as a function of incident wavelength and cavity length.