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Spatial-light-modulator-based adaptive optical system for the use of multiple phase retrieval methods.

Christian Lingel, Tobias Haist, Wolfgang Osten

    Applied Optics
    |January 7, 2017
    PubMed
    Summary

    This study introduces an adaptive optical setup using a spatial light modulator (SLM) for versatile phase retrieval. This flexible system allows testing multiple methods and parameters without mechanical adjustments or hardware changes.

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    Area of Science:

    • Optical physics
    • Metrology
    • Computational imaging

    Background:

    • Phase retrieval is crucial for reconstructing object information from intensity measurements.
    • Traditional methods often require mechanical adjustments or hardware changes for different optical configurations.
    • Developing adaptable and stable optical setups is essential for efficient phase retrieval research.

    Purpose of the Study:

    • To propose and validate an adaptive optical setup for phase retrieval.
    • To demonstrate the capability of testing diverse phase retrieval algorithms and parameters within a single, stable configuration.
    • To eliminate the need for mechanical movement and hardware adaptation in optical setups.

    Main Methods:

    • Implementation of an adaptive optical setup utilizing a spatial light modulator (SLM).
    • Testing of the transport of intensity equation (TIE) method.
    • Development and application of a novel iterative adaptive phase retrieval method involving phase cancellation on the SLM.
    • Comparison of measurement results with white light interferometric measurements.

    Main Results:

    • The proposed adaptive optical setup successfully accommodates various phase retrieval methods.
    • The system allows for testing different optical and algorithmic parameters without mechanical reconfiguration.
    • Exemplary results demonstrate the efficacy of both the TIE method and the new iterative adaptive method.
    • The adaptive setup provides comparable results to established white light interferometric measurements.

    Conclusions:

    • The developed adaptive optical setup offers a versatile and stable platform for phase retrieval research.
    • The use of an SLM enables efficient testing of multiple phase retrieval techniques and parameters.
    • This approach significantly reduces the need for hardware modifications and mechanical adjustments, streamlining experimental procedures.