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Photon counting arrays for astrophysics
Journal of Modern Optics, 2007A compact system for counting and time-tagging single photons is presented, based on a monolithic array sensor of 60 pixels able to detect single photons, namely the single-photon avalanche diode array (SPADA). First, the working principle and performance of the single-photon detector pixel is detailed, with particular attention paid to monolithic ...
Zappa F +10 more
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Photon-Counting CT: Technical Features and Clinical Impact on Abdominal Imaging [PDF]
Abdominal RadiologyThe version of record of this article, first published in Abdominal Radiology, is available online at Publisher’s website: https://doi.org/10.1007/s00261-024-04414-5.Photon-counting CT has a completely different detector mechanism than conventional ...
Hiromitsu Onishi +2 more
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The capacity of the photon counting channel
IEEE Transactions on Information Theory, 1981Previous work has shown that the capacity of the single-mode photon-counting channel in the region in which quantum effects are most pronounced is 1/(kT \ln 2) bit/J. Here T is the quantum noise temperature, and k is Boltzmann's constant. However, to achieve this, the number of photons per second must be very low, so this does not determine the ...
John R. Pierce +2 more
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Single photon counting imagery
Journal of Bioluminescence and Chemiluminescence, 1989AbstractAdvent of the multichannel plate and position sensitive detector has made possible true single photon counting imaging tubes. We have investigated the application of these detectors in studies of the ultraweak light emission of biological materials.
R Q, Scott, H, Inaba
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Characterizing Single Photons by Photon Counting
Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, 2009We study the ability to measure the non-Gaussian character of the single photon Fock states via direct measurements of the photon number statistics of displaced quantum states.
Kaisa Laiho +3 more
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Photon Counting During an Eclipse
Applied Optics, 1970We have built an instrument that counts pulses from photomultipliers that look at four bands of solar continuum, recording the changes in intensity during an eclipse. We use a plywood spectrograph to select an ultraviolet band and interference filters for the others.
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Photon-counting speckle masking: the photon-counting hole in the triple correlation
SPIE Proceedings, 1990Speckle interferograms of faint astronomical objects consist of 3 to 1000 photon events. Due to imageintensifier properties the photon events have different size. The only interesting information in such imagesare the positions of' the photon events.
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Photon-counting speckle imaging: the photon-counting hole in triple correlation
Journal of the Optical Society of America A, 1993Triple-correlation analysis of astronomical speckle interferograms can overcome the image degradation caused by a turbulent atmosphere. The speckle interferograms of faint astronomical objects consist of only a few photoevents. The low time resolution of some types of detector explains why only one photoevent per pixel can be detected, even if two or ...
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PHOTON COUNTING DETECTOR AND PHOTON COUNTING METHOD
2023SOLF TORSTEN JÖRN +2 more
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