The handedness of chiral molecules can be detected by circular dichroism (CD). The work introduces a cavity composed of two parallel arrays of helicity-preserving silicon disks that allows one to enhance the CD signal by more than 2 orders of magnitude. In order to study the system numerically, JCMsuite is used to determine the T-matrix of the silicon cylinders.
J. Feis, et al. Helicity-Preserving Optical Cavity Modes for Enhanced Sensing of Chiral Molecules. Phys. Rev. Lett. 124, 033201 (2020).