1 November 1993 Absolute meter of photodetector quantum efficiency based on the parametric down-conversion effect
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Optical Engineering, 32(11), (1993). doi:10.1117/12.147702
Abstract
The quantum phenomena of parametric down conversion have been used for absolute measurement of the photodetector quantum efficiency of ultra-low-light radiation ranging from 10-12 to 10-15 W, which is equivalent to photon fluxes of 107 to 104 s-1. The process of parametric down conversion gives rise to highly correlated (in time and space) photon flux pairs. We describe the method, experimental investigation, and a new device involving the measurement of the coincidence rate of photodetection of these two correlated beams of light. The coincidence is lowered by a nonunit quantum efficiency of either detection. This fact was used for the definition of the absolute value of both photodetector's quantum efficiencies.
Vera Moiseevna Ginzburg, N. G. Keratishvili, Y. L. Korzhenevich, G. V. Lunev, Alexander N. Penin, Victor I. Sapritsky, "Absolute meter of photodetector quantum efficiency based on the parametric down-conversion effect," Optical Engineering 32(11), (1 November 1993). https://doi.org/10.1117/12.147702
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