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Partially coherent sources with circular coherence.

M Santarsiero, R Martínez-Herrero, D Maluenda

    Optics Letters
    |April 15, 2017
    PubMed
    Summary
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    Researchers introduce novel partially coherent light sources. These sources offer unique coherence properties, controllable from perfect to vanishing, with applications in advanced optics.

    Area of Science:

    • Optics and Photonics
    • Coherent Light Sources
    • Electromagnetism

    Background:

    • Partially coherent light sources are crucial in various optical applications.
    • Controlling coherence properties of light sources remains an active research area.
    • Existing methods for generating partially coherent light have limitations.

    Purpose of the Study:

    • To introduce a new class of partially coherent light sources.
    • To analyze the coherence properties of these novel sources.
    • To explore methods for synthesizing such sources using generalized theorems.

    Main Methods:

    • Introduction of a new class of partially coherent light sources.
    • Application of a generalized van Cittert-Zernike theorem.
    • Analysis of beams radiated by these sources at the source plane and during free propagation.

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    Main Results:

    • The new sources exhibit perfect coherence along concentric annuli at the source plane.
    • Coherence can be precisely controlled, ranging from partial to vanishing, between points at different radial distances.
    • Demonstration of synthesis using axial sources and generalized van Cittert-Zernike theorem.

    Conclusions:

    • A novel class of partially coherent light sources with tunable coherence has been successfully introduced.
    • These sources offer unique coherence characteristics not achievable with conventional sources.
    • The findings pave the way for new optical applications requiring tailored coherence properties.