Haruki Kawaguchi   Kei Umesato   Kanta Takahashi   Keisaku Yamane   Ryuji Morita   Ken-ichi Yuyama   Satoyuki Kawano   Katsuhiko Miyamoto   Michinari Kohri   Takashige Omatsu   
Nanophotonics 11(4) 855-864 2022年2月
Abstract
An optical vortex possesses a ring-shaped spatial profile and orbital angular momentum (OAM) owing to its helical wavefront. This form of structured light has garnered significant attention in recent years, and it has enabled new invest...