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    We developed a new adaptive optics system using a liquid-filled optofluidic device for precise wavefront control. This system enables sensorless correction of optical distortions, improving image quality in microscopy.

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    Area of Science:

    • Optics and Photonics
    • Biomedical Engineering
    • Microscopy

    Background:

    • Adaptive optics (AO) systems are crucial for correcting optical aberrations in imaging.
    • Traditional AO systems often require complex wavefront sensors.
    • There is a need for compact and efficient AO solutions, particularly for microscopy.

    Purpose of the Study:

    • To introduce a novel transmissive refractive adaptive optics system.
    • To demonstrate a sensorless wavefront error estimation algorithm for optical correction.
    • To evaluate the system's performance in a wide-field microscope.

    Main Methods:

    • Developed a deformable transparent optofluidic wavefront modulator with a liquid-filled cavity and electrostatic actuation.
    • Implemented an open-loop control strategy with and without active wavefront sensing.
    • Utilized a progressive modal decomposition algorithm for sensorless point-spread function (PSF) correction.

    Main Results:

    • Achieved high-fidelity recreation of Zernike modes up to the fourth order.
    • Demonstrated blind (sensorless) PSF correction in a wide-field microscope.
    • The optofluidic modulator effectively controlled the two-dimensional phase distribution.

    Conclusions:

    • The developed transmissive refractive adaptive optics system offers a promising approach for aberration correction.
    • Sensorless wavefront correction using the progressive modal decomposition algorithm is effective.
    • This technology has potential applications in advanced microscopy and optical instrumentation.