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Updated: Feb 1, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

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Radial-phase enabled OAM multiplexing independent of beam divergence

Yue Zhu, Yejun Liu, Weizhen Niu

    Optics Letters
    |January 30, 2026
    PubMed
    Summary

    Orbital angular momentum (OAM) multiplexing in free-space optical communications suffers from diffraction. A novel radial-phase control method suppresses divergence, enhancing received power and transmission distance for OAM beams.

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