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}

Analyses of the role of lattice spacing in chiral response. (a) Extracted resonance CD value, resonance wavelength each as a function of d_y. Vertical gray line indicates the maximum of the CD; (b) extracted spacer thickness at the resonance position as a function of d_y; (c) extracted resonance CD value, resonance wavelength each as a function of d_x, vertical gray line indicates the maximum of the CD; (d) extracted spacer thickness values at the resonance position as a function of d_x.