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Related Experiment Video

Updated: Dec 26, 2025

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Asymmetric coherence gratings.

Zhangrong Mei, Olga Korotkova

    Optics Letters
    |March 13, 2020
    PubMed
    Summary

    Researchers developed new partially coherent sources using complex-valued functions. This method allows for simpler manipulation of coherence properties to control light beam characteristics, enabling novel optical designs.

    Area of Science:

    • Optics
    • Photonics
    • Mathematical Physics

    Background:

    • Partially coherent light sources are crucial in various optical applications.
    • Controlling the coherence properties of light beams is essential for advanced optical systems.
    • Current methods for manipulating coherence often involve complex mathematical formulations.

    Purpose of the Study:

    • To introduce a novel class of partially coherent, Schell-type sources.
    • To demonstrate a method for manipulating the degree of coherence using finite series of complex-valued functions.
    • To enable the generation of complex light beams with simpler control mechanisms.

    Main Methods:

    • Representing the degree of coherence by a finite series of complex-valued functions.
    • Utilizing linear phase manipulation of the weighting coefficients.

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  • Applying the method to model asymmetric coherence gratings and lattices.

    • Main Results:

    • Successfully introduced a new class of partially coherent Schell-type sources.
    • Demonstrated that linear phase manipulation can achieve complex coherence properties.
    • Illustrated new possibilities for designing asymmetric coherence structures.

    Conclusions:

    • The proposed method offers a computationally efficient way to engineer partially coherent beams.
    • This approach simplifies the control over coherence properties compared to traditional nonlinear methods.
    • Opens new avenues for designing advanced optical elements and systems with tailored coherence characteristics.