Open Access
17 November 2021 Engineering photonic angular momentum with structured light: a review
Jian Chen, Chenhao Wan, Qiwen Zhan
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Abstract

Structured light with inhomogeneous phase, amplitude, and polarization spatial distributions that represent an infinite-dimensional space of eigenstates for light as the ideal carrier can provide a structured combination of photonic spin and orbital angular momentum (OAM). Photonic spin angular momentum (SAM) interactions with matter have long been studied, whereas the photonic OAM has only recently been discovered, receiving attention in the past three decades. Although controlling polarization (i.e., SAM) alone can provide useful information about the media with which the light interacts, light fields carrying both OAM and SAM may provide additional information, permitting new sensing mechanisms and light–matter interactions. We summarize recent developments in controlling photonic angular momentum (AM) using complex structured optical fields. Arbitrarily oriented photonic SAM and OAM states may be generated through careful engineering of the spatial and temporal structures of optical fields. Moreover, we discuss potential applications of specifically engineered photonic AM states in optical tweezers, directional coupling, and optical information transmission and processing.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
Jian Chen, Chenhao Wan, and Qiwen Zhan "Engineering photonic angular momentum with structured light: a review," Advanced Photonics 3(6), 064001 (17 November 2021). https://doi.org/10.1117/1.AP.3.6.064001
Received: 18 April 2021; Accepted: 15 October 2021; Published: 17 November 2021
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CITATIONS
Cited by 88 scholarly publications.
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KEYWORDS
Polarization

Structured light

Amplitude modulation

Near field optics

Multiplexing

Nanoparticles

Photon polarization

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