Enabling all-to-circular polarization upconversion by nonlinear chiral metasurfaces with rotational symmetry

Dmitrii Gromyko, Jun Siang Loh, Jiangang Feng +2

We implement a stacking strategy in designing chiral metasurfaces with high rotational symmetry, enabling quasi-bound-in-the-continuum (quasi-BIC) resonances characterized by absol…