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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
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Cascaded diffraction in optical systems. Part I: simulation model.

Herbert Gross

    Journal of the Optical Society of America. A, Optics, Image Science, and Vision
    |March 3, 2020
    PubMed
    Summary

    Real optical systems experience cascaded diffraction due to multiple light-limiting boundaries. This study presents a simplified model and rule of thumb for estimating these edge diffraction effects in optical design.

    Area of Science:

    • Optics and Photonics
    • Optical Engineering

    Background:

    • Real optical systems inherently limit light beams using diaphragms or lens boundaries.
    • Assuming exit pupil truncation for diffraction calculations is a simplification, neglecting internal boundary effects.

    Purpose of the Study:

    • To investigate the impact of cascaded diffraction from multiple internal boundaries in optical systems.
    • To develop a simplified model for estimating edge diffraction effects.
    • To provide a rule of thumb for practical optical system design.

    Main Methods:

    • Modeling cascaded diffraction effects from multiple truncating surfaces.
    • Analyzing the modification of amplitude and phase in the exit pupil field.
    • Developing a fast estimation model for edge diffraction.

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    Main Results:

    • Cascaded diffraction significantly modifies the exit pupil field's amplitude and phase.
    • Edge diffraction effects from internal boundaries are crucial for accurate optical system analysis.
    • A simplified model and rule of thumb are derived for practical estimations.

    Conclusions:

    • Rigorous diffraction calculations must account for internal system boundaries.
    • The developed model offers a fast and practical approach to estimate diffraction effects.
    • The findings are applicable to the design and analysis of real-world optical systems.