Anomalous multi-ramp fractional vortex beams with arbitrary topological charge jumps
Abstract
Traditional fractional vortex beams are well-known “jump” beams: that is, their net topological charge jumps by unity as the effective topological charge of the source passes a half-integer value. Here, we propose an anomalous multi-ramp fractional vortex (AMRFV) beam. Unlike the traditional fractional vortex beams, an AMRFV beam can be designed to have arbitrary jumps in topological charge at any critical threshold of the source charge. We walk through some examples of AMRFV beams using simulations and present a clear interpretation of the multi-jump characteristic based on the evolution of phase singularities.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 14, 2020
- Source ID
- 10.1063/5.0028490
Entities
People
- Chengliang Zhao
- Greg Gbur
- Hao Zhang
- Jun Zeng
- Yangjian Cai
- Zhiheng Xu
Organizations
- China Scholarship Council
- National Natural Science Foundation of China
- Office of Naval Research Global
- Shandong Normal University
- Soochow University
- University of North Carolina at Charlotte