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A large-aperture high-sensitivity avalanche image intensifier panel.

Y Arikawa1, S Matsubara1, H Kishimoto1

  • 1Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka, Japan.

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This study presents a large-aperture image intensifier panel with high quantum efficiency and optical gain. It can convert faint light emissions into visible flashes, enabling applications in imaging and night vision.

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Area of Science:

  • Optoelectronics
  • Photonics
  • Detector technology

Background:

  • High-sensitivity imaging is crucial for various scientific and technological applications.
  • Existing image intensifier technologies often face limitations in aperture size, gain, or resolution.

Purpose of the Study:

  • To develop and characterize a novel large-aperture, high-sensitivity image intensifier panel.
  • To demonstrate its capability for intensifying low-light signals for visible light applications.

Main Methods:

  • Fabrication of an image intensifier panel using an avalanche photodiode array and a light-emitting diode array.
  • Characterization of the device's quantum efficiency, optical gain, time resolution, and aperture size.
  • Testing its ability to intensify single particle scintillation emissions.

Main Results:

  • Achieved 40% quantum efficiency, over 10^4 optical gain, and 80-ns time resolution.
  • Device features a 20 cm aperture, scalable to larger sizes.
  • Successfully intensified single scintillation events to visible flashes.
  • Operates at a low voltage of +57 V.

Conclusions:

  • The developed large-aperture image intensifier panel offers significant performance advantages.
  • Its scalability and high sensitivity make it suitable for diverse applications including scintillation imaging and night vision.
  • Future improvements in avalanche photodiode size can enhance image resolution.