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Detector calibration at INM using a correlated photons source*

Published online by Cambridge University Press:  23 August 2006

A. Ghazi-Bellouati ,
A. Razet ,
J. Bastie  and
M. E. Himbert
A. Ghazi-Bellouati
Affiliation:
INM/CNAM, 61 rue du Landy, 93210 La Plaine Saint-Denis, France
A. Razet*
Affiliation:
INM/CNAM, 61 rue du Landy, 93210 La Plaine Saint-Denis, France
J. Bastie
Affiliation:
INM/CNAM, 61 rue du Landy, 93210 La Plaine Saint-Denis, France
M. E. Himbert
Affiliation:
INM/CNAM, 61 rue du Landy, 93210 La Plaine Saint-Denis, France
*
[email protected]
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Abstract

The correlated photons source is obtained from the parametric down conversion of photons generated in a non linear crystal. When associated with a system of coincidences counting, this source allows one to measure the detection efficiencies of detectors working at photon counting levels, without the need for reference sources or detectors. At the Institut National de Métrologie (France), this method was implemented with the aim of realising a new standard detector for the absolute measurement of very weak radiations. The relative standard uncertainty of the detection efficiency measurements is 1.1%.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 35 , Issue 3 , September 2006 , pp. 211 - 216
Copyright
© EDP Sciences, 2006

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Footnotes

*

This paper has been presented at “3e colloque interdisciplinaire en instrumentation (C2I 2004)”, École Normale Supérieure de Cachan, 29–30 janvier 2004.

References

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