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Updated: Apr 8, 2026

Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2
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Miniature spectrometer based on diffraction in a dispersive hole array.

Tao Yang, Cao Xu, Ho-pui Ho

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    |July 1, 2015
    PubMed
    Summary
    This summary is machine-generated.

    We developed a compact spectrometer using a novel 10x10 hole array for spectral analysis. This innovative design allows for accurate spectral content recovery across the visible band, with potential for broader applications.

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    Area of Science:

    • Optics and Photonics
    • Spectroscopy
    • Instrumentation Engineering

    Background:

    • Traditional spectrometers can be bulky and complex.
    • There is a need for miniaturized and cost-effective spectral analysis tools.

    Purpose of the Study:

    • To introduce an ultra-compact spectrometer utilizing a 10x10 hole array as the dispersive element.
    • To demonstrate a method for recovering spectral information from a 2D intensity distribution using linear equations.

    Main Methods:

    • Designing a 10x10 hole array with pre-determined hole sizes.
    • Modeling the 2D intensity distribution as a system of simultaneous linear equations.
    • Solving the linear system using a regularized procedure to recover spectral content.

    Main Results:

    • Successfully demonstrated spectral content recovery within the visible band.
    • The 10x10 hole array functions effectively as a dispersive component.
    • The reconstruction range can be extended using a near-infrared CCD.

    Conclusions:

    • The proposed ultra-compact spectrometer offers a viable solution for wavelength analysis.
    • The method shows strong potential for various applications requiring miniaturized spectral analysis.
    • Further extension of the spectral range is feasible with appropriate detector technology.