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Single photon counting with a microchannel plate intensified integrated diode array.

M Parkinson

    Applied Optics
    |June 18, 2010
    PubMed
    Summary

    A new multichannel photoelectron counting system uses a Reticon photodiode array for astronomical spectrophotometry. It aims for noiseless, shot-limited performance in detecting faint astronomical sources.

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    Area of Science:

    • Astrophysics and Instrumentation
    • Optical Engineering

    Background:

    • Astronomical spectrophotometry requires sensitive detectors for faint sources.
    • Existing systems often face limitations in noise and sensitivity.

    Purpose of the Study:

    • To develop a 1-D electronic camera for high-dispersion astronomical spectrophotometry.
    • To achieve near-noiseless amplification for single photon detection.

    Main Methods:

    • Utilized a Reticon 1024-element linear silicon photodiode array.
    • Integrated a microchannel plate intensifier for signal amplification.
    • Employed multichannel photoelectron counting and pulse counting electronics.

    Main Results:

    • Demonstrated potential for single photon detection with an intensification factor of ~10^8.
    • Achieved performance approaching a noiseless amplifier with shot-limited capabilities.
    • Showcased system operation in intensified line scanning and slow-scan chilled modes.

    Conclusions:

    • The developed system offers a significant advancement in astronomical spectrophotometry.
    • It enables the detection of faint astronomical sources with unprecedented sensitivity.
    • The system's design philosophy targets shot-limited performance for improved astronomical observations.

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