Abstract

The structure of the coherence–orbital angular momentum (OAM) matrix of a scalar, non-uniformly correlated source is revealed and its relation with the degree of coherence is established. It is shown that while this source class has a real-valued coherence state, it possesses a rich OAM correlation content and highly controllable OAM spectrum. In addition, the degree of OAM purity based on the information entropy measure is employed for, we believe, the first time, and is shown to be controlled by the choice of location and variance of the correlation center.

© 2022 Optica Publishing Group

Coherence–orbital angular momentum matrix of Schell-model sources

Fei Wang, Zhaohui Yang, Yahong Chen, Olga Korotkova, and Yangjian Cai
Opt. Lett. 47(11) 2826-2829 (2022)

Measurement of the coherence-orbital angular momentum matrix of a partially coherent beam

Zhaohui Yang, Haiyun Wang, Yahong Chen, Fei Wang, Greg Gbur, Olga Korotkova, and Yangjian Cai
Opt. Lett. 47(17) 4467-4470 (2022)

Generating non-uniformly correlated twisted sources

Shijun Zhu, Peng Li, Zhenhua Li, Yangjian Cai, and Weiji He
Opt. Lett. 46(20) 5100-5103 (2021)

Fast measurement of coherence–orbital angular momentum matrices of random light beams using off-axis holography and coordinate transformation

WeiHao Li, Yonglei Liu, Yahong Chen, Yangjian Cai, Olga Korotkova, and Fei Wang
Opt. Lett. 49(5) 1173-1176 (2024)

Orbital angular momentum transformations by non-local linear systems

Greg Gbur and Olga Korotkova
Opt. Lett. 47(2) 321-324 (2022)