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    Area of Science:

    • Optics and Photonics
    • Wave Phenomena
    • Coherent Beam Generation

    Background:

    • Partially coherent beams are crucial in various optical applications.
    • Generating and characterizing phase screens with controlled correlations is challenging.
    • Existing methods lack precise control over correlation decay properties.

    Purpose of the Study:

    • To develop a method for generating partially coherent phase screens with distinct correlation decay types.
    • To experimentally validate the distinguishability of these phase screens.
    • To provide an analytical model for beam quality degradation.

    Main Methods:

    • Singular-value decomposition (SVD) for phase screen generation.
    • High-speed (kHz rate) realization using a deformable mirror.
    • Characterization via Shack-Hartmann wavefront sensing and beam quality measurements.

    Main Results:

    • Two types of phase screens (polynomial and Gaussian decay) were successfully generated.
    • Experimental data confirmed the statistical distinguishability of correlation decay.
    • Goodness-of-fit for correlation matrices was within 10% of ideal.
    • An analytical expression for Gaussian phase screen beam quality showed excellent agreement with empirical data.

    Conclusions:

    • The SVD method effectively generates distinguishable partially coherent phase screens.
    • This technique enhances capabilities for optical beam shaping.
    • Potential applications include turbulence mitigation and nonlinear optics.