Correlation function of partially coherent vortex beams induces changes in the orbital angular momentum spectrum
Abstract
The crosstalk of orbital angular momentum (OAM) modes induced by random light fields poses a significant challenge in free-space optical communication. Analyzing the influence of such fields on the OAM spectrum is therefore essential. Based on the coherence-orbital angular momentum (COAM) matrix, we derive analytical expressions for the OAM spectrum of partially coherent vortex beams (PCVBs) with three distinct correlation functions. Our results show that both the global coherence and the form of the correlation function significantly affect the OAM spectrum. We explain the underlying physical mechanism and support our findings with numerical simulations that closely align with the analytical predictions. This work advances the study of partially coherent light with tailored correlation structures.
Fields of Study & Subjects
Orbital Angular Momentum in Optics
Metamaterials and Metasurfaces Applications
Random lasers and scattering media
Publication details
- Journal / source
- Journal of the Optical Society of America A
- Publisher
- Optica Publishing Group
- Volume
- 43
- Issue
- 5
- Pages
- B8–B8
- Publication date
- 3 February 2026
- Language
- EN