Affiliation:
1. Jiangsu University of Science and Technology
2. Wenzhou University of Technology
Abstract
In this paper, the generation and propagation properties of
Bessel–Gaussian (BG) rotationally symmetric power-exponent-phase
vortex beam (RSPEPVBs) were demonstrated and discussed. The results
showed that the BG-RSPEPVBs can be directly generated based on the
spatial light modulator, of which the phase singularities were
verified by the interference patterns with the plane wave. It can be
found that the intensity distributions of the BG-RSPEPVBs, with
different topological charges (TCs) and power orders, were fan-shaped
and polycyclic, which possessed the characteristics of BG beams and
RSPEPVBs, simultaneously. Thus, the propagation invariance of the
BG-RSPEPVBs is better than that of Laguerre–Gaussian RSPEPVBs and
RSPEPVBs. Moreover, the focusing spot of the BG-RSPEPVBs would evolve
into a bright ring with the same ring radius at the focal plane, which
is independent of the TC and more suitable for the applications of
optical coupling, optical communication, optical trapping, and so
on.
Funder
National Natural Science Foundation of
China
Jiangsu Provincial Key Research and
Development Program
Wenzhou Major Scientific and
Technological Innovation Project
Postgraduate Research & Practice
Innovation Program of Jiangsu Province
Subject
Computer Vision and Pattern Recognition,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials