National Natural Science Foundation of China(12004245,12192252,12374314);National Key Research and Development Program of China(2023YFA1407200)。
Vectorial beams have attracted great interest due to their broad applications in optical micromanipulation,optical imaging,optical micromachining,and optical communication.Nonlinear frequency conversion is an effectiv...
sponsored by the 973 programs (Nos. 2011CBA00200 and 2012CB921803);the NSFC programs (Nos. 61490714, 11304151, 61435008, and 61225026);the Ph.D. Programs Foundation of the Ministry of Education of China (No.20120091120020);the support from the Program for Changjiang Scholars and Innovative Research Team in University (No.IRT13021);PAPD
A high-efficiency technique for optical vortex(OV) generation is proposed and demonstrated. The technique is based on liquid crystal fork gratings with space-variant azimuthal orientations, which are locally controlle...