Enhancement of the infrared detection efficiency of silicon photon-counting avalanche photodiodes by use of silicon germanium absorbing layers

2002 ◽  
Vol 27 (4) ◽  
pp. 219 ◽  
Author(s):  
Alison Y. Loudon ◽  
Philip A. Hiskett ◽  
Gerald S. Buller ◽  
Roger T. Carline ◽  
Dave C. Herbert ◽  
...  
Keyword(s):  
Silicon Germanium ◽  
Detection Efficiency ◽  
Avalanche Photodiodes ◽  
Photon Counting ◽  
Infrared Detection

scholarly journals Enhanced red and near infrared detection in flow cytometry using avalanche photodiodes

2008 ◽  
Vol 73A (8) ◽  
pp. 767-776 ◽  
Author(s):  
William G. Lawrence ◽  
Gyula Varadi ◽  
Gerald Entine ◽  
Edward Podniesinski ◽  
Paul K. Wallace
Keyword(s):  
Flow Cytometry ◽  
Near Infrared ◽  
Avalanche Photodiodes ◽  
Infrared Detection

Ultraviolet photon counting with GaN avalanche photodiodes

2000 ◽  
Vol 76 (26) ◽  
pp. 3938-3940 ◽  
Author(s):  
K. A. McIntosh ◽  
R. J. Molnar ◽  
L. J. Mahoney ◽  
K. M. Molvar ◽  
N. Efremow ◽  
...  
Keyword(s):  
Avalanche Photodiodes ◽  
Photon Counting

scholarly journals CdTe Based Energy Resolving, X-ray Photon Counting Detector Performance Assessment: The Effects of Charge Sharing Correction Algorithm Choice

Sensors ◽  
2020 ◽  
Vol 20 (21) ◽  
pp. 6093
Author(s):  
Oliver L. P. Pickford Scienti ◽  
Jeffrey C. Bamber ◽  
Dimitra G. Darambara
Keyword(s):  
Detection Efficiency ◽  
Photon Counting ◽  
Charge Sharing ◽  
Correction Algorithm ◽  
Detector Performance ◽  
Photon Counting Detector ◽  
Photon Counting Detectors ◽  
The Difference ◽  
Pixel Pitch ◽  
Made In

Most modern energy resolving, photon counting detectors employ small (sub 1 mm) pixels for high spatial resolution and low per pixel count rate requirements. These small pixels can suffer from a range of charge sharing effects (CSEs) that degrade both spectral analysis and imaging metrics. A range of charge sharing correction algorithms (CSCAs) have been proposed and validated by different groups to reduce CSEs, however their performance is often compared solely to the same system when no such corrections are made. In this paper, a combination of Monte Carlo and finite element methods are used to compare six different CSCAs with the case where no CSCA is employed, with respect to four different metrics: absolute detection efficiency, photopeak detection efficiency, relative coincidence counts, and binned spectral efficiency. The performance of the various CSCAs is explored when running on systems with pixel pitches ranging from 100 µm to 600µm, in 50 µm increments, and fluxes from 106 to 108 photons mm−2 s−1 are considered. Novel mechanistic explanations for the difference in performance of the various CSCAs are proposed and supported. This work represents a subset of a larger project in which pixel pitch, thickness, flux, and CSCA are all varied systematically.

scholarly journals Optical Observations on Milli-, Micro-, and Nanosecond Timescales

1995 ◽  
Vol 151 ◽  
pp. 129-130
Author(s):  
D. Dravins ◽  
L. Lindegren ◽  
E. Mezey
Keyword(s):  
Fine Structure ◽  
High Speed ◽  
Avalanche Photodiodes ◽  
Photon Emission ◽  
Photon Counting ◽  
Optical Observations ◽  
Accretion Flows ◽  
La Palma

AbstractInstrumentation and observing methods are developed for optical high-speed astrophysics, aiming at exploring milli-, micro-, and nanosecond variability. Such rapid fluctuations can be expected from instabilities in accretion flows, and in the fine structure of photon emission. For the optical, we have constructed a dedicated instrument, whose first version was tested on La Palma to study atmospheric scintillation on very short timescales. A second version is now under development, using photon-counting avalanche photodiodes as detectors.

Photon counting techniques with silicon avalanche photodiodes

1993 ◽  
Vol 32 (21) ◽  
pp. 3894 ◽  
Author(s):  
Henri Dautet ◽  
Pierre Deschamps ◽  
Bruno Dion ◽  
Andrew D. MacGregor ◽  
Darleene MacSween ◽  
...  
Keyword(s):  
Avalanche Photodiodes ◽  
Photon Counting
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