Fig. 6: Decomposition of total scattering dichroism into electric/magnetic multipoles.
From: Controlling the broadband enhanced light chirality with L-shaped dielectric metamaterials
a Experimentally measured (red triangles) circular dichroism (CDExp) spectrum plotted together with theoretically computed spectra of both CDTh (red circles) and total scattering dichroism (blue circles, ΔSTOT, Th). The CDExp spectra is multiplied by 10 to better match the stronger CDTh amplitude. The vertical blue dotted lines indicate the minimum value in the STOT,Th spectrum. b Electric and c magnetic dipole contributions to the L-shaped metamaterial chirality response. f Electric and g magnetic quadrupole contributions of the same L-shaped metamaterial. The vertical blue dotted lines in b, c, f, and g indicate the minimum values of ΔSED, ΔSEQ, ΔSMD, and ΔSMQ, respectively, which always coincide at the same spectrum point. d 2D far field electric radiation profiles obtained from the interaction of left (magenta) and right (green) circularly polarized light with the L-shaped metamaterial unit cell. e 3D surface z-component electric field distribution as the incident light is left (top) or right (bottom) circular polarized.
