Work

Observation of phase difference in the superposition of two optical vortex beams

Year: 2025

Type: article

Abstract: A method to measure the phase difference from a superposition of two optical vortex beams is presented. In our recent demonstration, these two vortex beams possess the same topological charge of l = +1 and different topological charges of l = +1 and l = −1. However, they have different initial phases. Our results show differences in the interference patterns at far-field diffraction. We show both theoretical and experimental results, which are in good agreement. Our study can be applied to measure phase objects, where one of the two vortex beams passes through a phase object before the two beams are superimposed.

Source: Optics Continuum

DOI: 10.1364/optcon.551874

Authors: Wipawee Temnuch, Pissunee Deechuen, Sorakrai Srisuphaphon, Sitti Buathong, Sarayut Deachapunya

Institution: Kasetsart University

Language: English

Topic: Orbital Angular Momentum in Optics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,372

Funders: Burapha University, Thailand Science Research and Innovation, Kasetsart University Research and Development Institute