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    This study optimizes terahertz attenuated total reflection (THz-ATR) imaging systems. P-polarized waves and specific prism designs minimize errors for enhanced performance in various applications.

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    Area of Science:

    • Optics and Photonics
    • Terahertz Spectroscopy
    • Imaging Systems

    Background:

    • Terahertz attenuated total reflection (THz-ATR) imaging shows promise but lacks in-depth system analysis.
    • Current THz-ATR systems have preliminary applications with unaddressed performance limitations.

    Purpose of the Study:

    • To theoretically and experimentally analyze optimum prism design and polarization for error reduction in THz-ATR imaging.
    • To enhance the performance and practicality of THz-ATR scanning imaging systems.

    Main Methods:

    • Development of a vertically scanning THz-ATR imaging system.
    • Theoretical analysis considering secondary internal reflections and prism deflection.
    • Experimental validation of theoretical predictions.

    Main Results:

    • Identified optimal prism base angles and polarization states for minimizing errors.
    • Recommended p-polarized terahertz waves for prisms with base angles below 31°.
    • Demonstrated good agreement between theoretical predictions and experimental results.

    Conclusions:

    • The proposed analysis provides a foundation for designing more robust THz-ATR imaging systems.
    • Optimized prism design and polarization selection significantly reduce errors in THz-ATR imaging.
    • This research contributes to the advancement of practical THz-ATR applications across diverse fields.