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Resolution-equivalent D* for SPRITE detectors.

P Fredin, G D Boreman

    Applied Optics
    |November 10, 2010
    PubMed
    Summary
    This summary is machine-generated.

    We developed a method to normalize signal-processing-in-the-element (SPRITE) detector performance, enabling direct comparison with discrete-element detectors. This normalization provides an equivalent-discrete D* for better design insights.

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    Area of Science:

    • Infrared detector technology
    • Solid-state physics
    • Optical engineering

    Background:

    • Signal-processing-in-the-element (SPRITE) detectors offer unique advantages but require standardized performance metrics.
    • Comparing SPRITE detectors with traditional discrete-element detectors is challenging due to differing performance characteristics.
    • Accurate modeling is crucial for optimizing detector design and application suitability.

    Purpose of the Study:

    • To present a method for normalizing measured D* (a key performance metric) of SPRITE detectors.
    • To enable a resolution-equivalent D* comparison between SPRITE and discrete-element detectors.
    • To facilitate performance comparisons among different SPRITE detectors.

    Main Methods:

    • Normalization of measured D* for SPRITE detectors to an equivalent-discrete D* value.
    • Utilizing a multiplicative factor derived from the ratio of two noise-equivalent bandwidths.
    • Applying a boost filter to the SPRITE detector to approximate the spatial resolution of a discrete detector.

    Main Results:

    • A normalization method yielding an equivalent-discrete D* for SPRITE detectors is presented.
    • For 8- to 12-µm SPRITE detectors, the normalization factor ranges from 0.85 to 0.57.
    • For 3- to 5-µm SPRITE detectors, the normalization factor ranges from 0.50 to 0.23.

    Conclusions:

    • The proposed normalization method allows for meaningful resolution-equivalent D* comparisons.
    • This technique aids in the design and selection of SPRITE detectors for various applications.
    • The findings provide quantitative factors for converting SPRITE D* to an equivalent discrete D* across different spectral bands.