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Updated: May 30, 2025

Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems
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Quasi-ray tracing realization using a Bessel beam for optical alignment.

Zhaowei Chen, Robert E Parks, Bhawna Dhawan

    Optics Express
    |January 29, 2025
    PubMed
    Summary
    This summary is machine-generated.

    Bessel beams behave like paraxial rays in misaligned optical systems. This finding enables quasi-ray tracing for precise optical alignment and improved system accuracy.

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    Area of Science:

    • Optics and Photonics
    • Optical Engineering

    Background:

    • Bessel beams are non-diffracting beams with unique propagation characteristics.
    • Understanding their behavior in misaligned optical systems is crucial for practical applications.

    Purpose of the Study:

    • To investigate the propagation of Bessel beams through misaligned apertured optical systems.
    • To propose and validate a novel hypothesis regarding Bessel beam behavior.
    • To explore the application of Bessel beams in quasi-ray tracing for optical alignment.

    Main Methods:

    • Experimental observation of Bessel beam propagation.
    • Derivation of analytical formulas using Cartesian coordinates and the Huygens-Fresnel principle.
    • Simulation using Gaussian decomposition and comparison with experimental results.

    Main Results:

    • A high correlation was found between simulations and experimental data.
    • Bessel beams exhibit paraxial ray-like behavior under specific conditions in misaligned systems.
    • Bessel beams can be interpreted as meridional rays in misaligned spherical surface systems.

    Conclusions:

    • The study validates the hypothesis that Bessel beams can mimic paraxial ray behavior.
    • This behavior allows for practical quasi-ray tracing in optical systems.
    • The findings offer a new method for enhancing the precision and efficiency of optical alignment.