Absolute calibration of Analog Detectors using Stimulated Parametric Down Conversion

Details Absolute calibration of Analog Detectors using Stimulated Parametric Down Conversion Absolute calibration of Analog Detectors using Stimulated Parametric Down Conversion

2008-02-04

arxiv.org/abs/0802.0346v1

Journal of Modern Optics 56 (2009) 401.

Physics

Quantum Physics

Scientific paper

10.1080/09500340802318317

Spontaneous parametric down conversion has been largely exploited as a tool for absolute calibration of photon counting detectors, photomultiplier tubes or avalanche photodiodes working in Geiger regime. In this work we investigate the extension of this technique from very low photon flux of photon counting regime to the absolute calibration of analog photodetectors at higher photon flux. Moving toward higher photon rate, i.e. at high gain regime, with the spontaneous parametric down conversion shows intrinsic limitations of the method, while the stimulated parametric down conversion process, where a seed beam properly injected into the crystal in order to increase the photon generation rate in the conjugate arm, allows us to work around this problem. A preliminary uncertainty budget is discussed.

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