Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 35, Issue 24, Pages 1315-1318Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2023.3321413
Keywords
Optical vortex; orbital angular momentum; topological charge; correlation filter
Ask authors/readers for more resources
A novel technique is proposed in this letter to identify the topological charge (TC) of a vortex beam using the optical correlation method. The proposed method enables instant identification of TC without manual counting and requires lesser datasets with simple architecture, compared to the traditional methods.
Recently optical beams containing orbital angular momentum have gained considerable attention due to their wide range of uses. In all the applications, accurate determination of the magnitude and sign of the topological charge (TC) is very important. Different techniques for determining the vortex beam's TC have been reported such as interferometric, diffractive, and machine learning based methods. In this letter, we demonstrate a novel technique to identify the TC of a vortex beam using the optical correlation method where a maximum average correlation height filter has been used. Unlike conventional methods, the proposed method enables instant identification of TC without manually counting the number of fringes and requires lesser datasets with simple architecture as compared to the machine learning-based method. The proposed idea is verified through both numerical simulation and experimental results with the help of fork-shaped interferometry.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available