Open AccessPolygonal shaping and multi-singularity manipulation of optical vortices via high-order cross-phase
Author(s) -
Yuan Ren,
Chen Wang,
Tong Liu,
Zengkun Wang,
Congling Yin,
Yuan Ren,
Zhimeng Li,
Hao Wu
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.397345
Subject(s) - singularity , optical vortex , vortex , forcing (mathematics) , phase (matter) , optics , field (mathematics) , order (exchange) , topology (electrical circuits) , physics , computer science , geometry , mathematics , quantum mechanics , mechanics , finance , atmospheric sciences , combinatorics , pure mathematics , economics
Increasing demand for practical applications is forcing more in-depth research into optical vortices (OVs): from the generation and measurement to the shaping and multi-singularity manipulation of OVs. Herein, we propose a new type of phase structure called the high-order cross-phase (HOCP), which can be employed to modulate OVs to implement polygonal shaping and multi-singularity manipulation simultaneously at far-field. Theoretically, we investigate the propagation characteristics of OVs modulated by a HOCP. In experiments, we achieve the polygonal shaping and multi-singularity manipulation of OVs via HOCPs. On this basis, we discuss the relationship between shapes and the orders of HOCPs, where we find that the order of a HOCP is exactly equal to the number of sides of polygonal OVs. This work provides a novel method to achieve polygonal shaping and multi-singularity manipulation simultaneously, which facilitate applications in optical micro-manipulation and optical communication.