Youdi Hu

Femtosecond Laser Line‐Exposure Fabrication of Planar Chiral Microstructures for OAM‐Sign Discrimination and Spatial Encoding

ABSTRACT Orbital angular momentum (OAM) provides an additional degree of freedom for structured‐light information encoding, yet vortex beams with opposite topological charges have nearly identical transverse intensity profiles, making the sign of l difficult to determine by direc...