# Correlation-induced orbital angular momentum changes

@article{Zhang2020CorrelationinducedOA, title={Correlation-induced orbital angular momentum changes}, author={Yongtao Zhang and Olga Korotkova and Yangjian Cai and Greg Gbur}, journal={arXiv: Optics}, year={2020} }

We demonstrate that the orbital angular momentum flux density of a paraxial light beam can change on propagation in free space. These changes are entirely due to the spatial coherence state of the source, and the effect is analogous to correlation-induced changes in the intensity, spectrum and polarization of a beam. The use of the source coherence state to control the width, shape, and transverse shifts of the OAM flux density is demonstrated with numerical examples.

## 6 Citations

### Unified matrix representation for spin and orbital angular momentum in partially coherent beams

- Physics
- 2021

In this paper, the authors introduce and study a matrix formalism that allows describing the interplay between coherence and orbital angular momentum in partially coherent light beams. The matrix is…

### Evolution of the orbital angular momentum flux density of partially coherent vortex beams in atmospheric turbulence

- PhysicsFrontiers in Physics
- 2022

We investigate the behavior of the orbital angular momentum (OAM) flux density of partially coherent vortex (PCV) beams in atmospheric turbulence. It is shown that for PCV beams with different…

### Orbital angular momentum evolution of twisted multi-Gaussian Schell model beams in anisotropic turbulence

- PhysicsOptics Communications
- 2022

### Characterization and transformation of the OAM in stationary light beams

- PhysicsOPTO
- 2022

The state of spatial coherence of a partially coherent optical source plays the crucial part in free-space evolution of the major properties of the radiated beam, such as its diffraction rate,…

### Angular momentum of the vortex ultrashort pulsed beam with a smaller beam waist.

- PhysicsOptics express
- 2021

The average AM of the vortex ultrashort pulsed beam (VUPB), which is generated and widely applied in the field of high-intensity and ultrafast regimes, is investigated and it is thought that the AM of VUPB can be controlled by adjusting the α and w0.

### A New Type of Shape-Invariant Beams with Structured Coherence: Laguerre-Christoffel-Darboux Beams

- PhysicsPhotonics
- 2021

A new class of sources presenting structured coherence properties is introduced and analyzed. They are obtained as the incoherent superposition of coherent Laguerre-Gaussian modes with suitable…

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