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Predictive control of thermally induced wavefront aberrations.

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    This study demonstrates predictive control for thermal wavefront aberrations in optical systems. The adaptive optics controller uses past measurements to predict and correct future aberrations, even with unknown model parameters.

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    Area of Science:

    • Optical Engineering
    • Adaptive Optics
    • Control Systems

    Background:

    • Thermally induced wavefront aberrations degrade optical system performance.
    • Accurate compensation is critical for high-power optical systems like lithography machines.
    • Existing methods may struggle with dynamic or partially unknown aberration models.

    Purpose of the Study:

    • To demonstrate a proof of concept for predictive control of thermally induced wavefront aberrations.
    • To develop an adaptive optics controller capable of predicting and compensating future aberrations.
    • To validate the controller's performance even when prediction model parameters are unknown.

    Main Methods:

    • Experimental demonstration of a predictive control algorithm.
    • Utilizing a model of thermally induced wavefront aberrations.
    • Employing past wavefront measurements for future aberration prediction and compensation.

    Main Results:

    • Successful proof-of-concept for predictive control of thermal aberrations.
    • The controller accurately predicts and compensates future aberrations using historical data.
    • Effective aberration correction was achieved even with partially unknown prediction model parameters.

    Conclusions:

    • Predictive control offers a viable strategy for managing thermally induced wavefront aberrations.
    • The developed adaptive optics controller shows promise for high-power optical systems.
    • This approach enhances optical system stability and performance in demanding applications.