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Single-photon imaging at 20,000 frames/s.

F Zappa1, S Tisa, S Cova

  • 1Dipartimento Elettronica e Informazione, Politecnico di Milano, Italy. zappa@elet.polimi.it

Optics Letters
|December 1, 2005
PubMed
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This study introduces a new silicon imaging system with 60 single-photon counters. It offers high detection efficiency and low crosstalk for advanced imaging applications.

Area of Science:

  • Photon detection
  • Solid-state imaging systems
  • Semiconductor device physics

Background:

  • Traditional imaging systems face limitations in sensitivity and speed.
  • The need for high-resolution, low-noise imaging in scientific research is growing.
  • Advancements in semiconductor technology enable novel detector designs.

Purpose of the Study:

  • To present a novel two-dimensional imaging system utilizing a monolithic silicon array of single-photon counters.
  • To characterize the performance of this solid-state imaging system, including detection efficiency, crosstalk, and speed.
  • To demonstrate the system's suitability for demanding imaging applications requiring high throughput and precise timing.

Main Methods:

  • Fabrication of a monolithic silicon array integrating 60 single-photon counters.

Related Experiment Videos

  • Integration of active quenching circuits for each pixel to enable parallel readout and nanosecond gating.
  • Comprehensive optical and electrical characterization of the imaging system's performance.
  • Evaluation of detection efficiency in the visible spectrum and pixel-to-pixel crosstalk.

    • Main Results:

    • The developed imaging system achieves a detection efficiency exceeding 40% in the visible range.
    • Pixel crosstalk is significantly reduced to below 10(-4) for 50 micrometer pixels.
    • The system demonstrates a maximum throughput of 20,000 frames per second with parallel readout.
    • Nanosecond gating capabilities are achieved through integrated active quenching circuits.

    Conclusions:

    • The presented silicon monolithic array of single-photon counters forms a rugged, low-voltage, and high-performance imaging system.
    • The system's high detection efficiency, low crosstalk, and high frame rate make it a promising solution for advanced scientific imaging.
    • This solid-state imaging technology offers significant advantages over conventional systems for applications requiring fast and sensitive photon detection.