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Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads
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Interferometry-based modal analysis with finite aperture effects.

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    This study introduces a new method for analyzing optical beams by accounting for aperture finiteness effects in interferometry. This clipping-cognizant reconstruction improves modal content analysis in practical optical systems.

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    Area of Science:

    • Optical physics
    • Interferometry
    • Beam analysis

    Background:

    • Interferometry is crucial for analyzing optical beam properties.
    • Aperture finiteness, or clipping, can distort interferometric measurements.
    • Existing methods often neglect these practical effects.

    Purpose of the Study:

    • To analyze the impact of aperture finiteness on interferograms.
    • To develop a generalized interferometry scheme for modal reconstruction.
    • To create a reconstruction method accounting for clipping effects.

    Main Methods:

    • Generalized interferometry for modal reconstruction.
    • Development of a clipping-cognizant reconstruction scheme.
    • Analysis of interferograms with aperture finiteness.

    Main Results:

    • A novel scheme for modal reconstruction from interferometric data was developed.
    • The proposed method explicitly accounts for clipping effects.
    • Significant performance gains were demonstrated compared to traditional methods.

    Conclusions:

    • Clipping-cognizant reconstruction offers superior performance in modal analysis.
    • The developed method enhances the accuracy of optical beam characterization.
    • This approach is vital for practical applications of generalized interferometry.