Enhancing the modal purity of orbital angular momentum photons

Orbital angular momentum (OAM) beams with topological charge ℓ are commonly generated and detected by modulating an incoming field with an azimuthal phase profile of the form exp(iℓϕ) by a variety of approaches. This results in unwanted radial modes and reduced power in the desired OAM mode. Here, w...

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Bibliographic Details
Main Authors: Isaac Nape, Bereneice Sephton, Yao-Wei Huang, Adam Vallés, Cheng-Wei Qiu, Antonio Ambrosio, Federico Capasso, Andrew Forbes
Format: Article
Language:English
Published: AIP Publishing LLC 2020-07-01
Series:APL Photonics
Online Access:http://dx.doi.org/10.1063/5.0005597