Coherence-orbital angular momentum matrix of Schell-model sources

Article Optics

Orbital angular momentum transformations by non-local linear systems

Greg Gbur et al.

Summary: This paper introduces a matrix description of orbital angular momentum (OAM) transformations in scalar optical beams by non-local, linear systems. The amplitude transfer function (ATF) is generalized to include information about mode-to-mode OAM coupling. The analysis suggests the existence of unexplored types of OAM transforming systems for radially independent systems. The results are further extended to random beams and random non-local systems, and the optical transfer function (OTF) is generalized to the OAM space.

OPTICS LETTERS (2022)

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Review Nanoscience & Nanotechnology

Orbital angular momentum and beyond in free-space optical communications

Jian Wang et al.

Summary: This paper provides an overview of the applications of orbital angular momentum (OAM) and other technologies in optical communications, covering topics such as the fundamentals of OAM, modulation, multiplexing, multicasting, communication in turbulence, structured light communications, as well as discussing the prospects and challenges for the future.

NANOPHOTONICS (2022)

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Article Optics

Jones and Stokes-Mueller analogous calculi for OAM-transforming optics

Olga Korotkova et al.

Summary: This study introduces a matrix-based approach for analyzing the local interactions of optical beams with devices that affect their orbital angular momentum (OAM) content, including deterministic interactions and interactions involving random beams and/or devices. The research applies this method to various devices and outlines an alternative formulation similar to the Stokes-Mueller calculus.

OPTICS LETTERS (2021)

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Article Optics

Robust far-field imaging by spatial coherence engineering

Yonglei Liu et al.

Summary: This study explores the impact of the coherence function on information transmission in a light field, revealing a new degree of freedom for information transfer. By studying the unique propagation characteristics of partially coherent beams, a novel method for far-field imaging in turbulent media is proposed, with advantages of confidentiality and turbulence resistance.

OPTO-ELECTRONIC ADVANCES (2021)

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Article Optics

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

Olga Korotkova et al.

Summary: A matrix representation for stationary beamlike light fields is introduced to deal with orbital angular momentum (OAM) and spatial coherence. The coherence-OAM matrix is discussed as the counterpart to the beam coherence-polarization matrix. The coherence-SAM-OAM matrix is introduced as a unified entity for treating beams with various coherence, spin, and orbital angular momentum states.

PHYSICAL REVIEW A (2021)

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Article Optics