OAM interferometry: the detection of the rotational Doppler shift

Richard Neo*, Sergio Leon-Saval, Joss Bland-Hawthorn, Gabriel Molina-Terriza

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    22 Citations (Scopus)

    Abstract

    In this paper, we propose a new type of rotational Doppler shift measurement based on the OAM of light which is capable of measuring the rotation of a point source in the plane orthogonal to the observer line of sight. By analysing the correlations between OAM states of light emitted by rotating sources, the rotational Doppler shift, and hence the rate of rotation, can be measured. We demonstrate that an OAM interferometer capable of extracting the rotational Doppler shift from OAM correlations can be constructed from a standard OAM modesorter combined with a phase filter.

    Original languageEnglish
    Pages (from-to)21159-21170
    Number of pages12
    JournalOptics Express
    Volume25
    Issue number18
    DOIs
    Publication statusPublished - 4 Sept 2017

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