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Optimization-based real-time open-loop control of an optofluidic refractive phase modulator.

Pouya Rajaeipour, Kaustubh Banerjee, Hans Zappe

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    Summary
    This summary is machine-generated.

    We developed a new control method for optofluidic phase modulators, improving aberration correction. This optimization technique offers superior performance compared to traditional methods for both optofluidic and deformable mirrors.

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    Area of Science:

    • Optics and Photonics
    • Control Systems Engineering
    • Fluid Dynamics

    Background:

    • Optofluidic refractive phase modulators offer unique bidirectional actuation via hydro-mechanical coupling.
    • Conventional control methods, like matrix pseudo-inversion, are suboptimal for these devices.
    • High-order aberration correction is crucial for advanced optical systems.

    Purpose of the Study:

    • To introduce a novel open-loop control method for electrostatically actuated optofluidic refractive phase modulators.
    • To demonstrate the method's effectiveness for high-order aberration correction.
    • To compare the new method against conventional approaches for both optofluidic and deformable mirrors.

    Main Methods:

    • Formulating wavefront control as a real-time solvable optimization problem with inequality constraints.
    • Employing an interior-point method to solve the convex optimization problem.
    • Applying the control method to both an optofluidic phase modulator and a conventional electrostatic deformable mirror.

    Main Results:

    • The optimization problem is convex, guaranteeing a global minimum in residual wavefront error.
    • The novel control method achieves improved correction fidelity.
    • Experimental validation demonstrates enhanced performance for both device types.

    Conclusions:

    • The developed optimization-based control method provides a superior approach for optofluidic phase modulators.
    • This method enhances aberration correction capabilities in optical systems.
    • The approach is applicable and beneficial for both optofluidic and conventional deformable mirrors.