Absolute meter of photodetector quantum efficiency based on the       parametric down-conversion effect

Vera Moiseevna Ginzburg; N. G. Keratishvili; Y. L. Korzhenevich; G. V. Lunev; Alexander N. Penin; Victor I. Sapritsky

doi:10.1117/12.147702

1 November 1993 Absolute meter of photodetector quantum efficiency based on the parametric down-conversion effect

Vera Moiseevna Ginzburg, N. G. Keratishvili, Y. L. Korzhenevich, G. V. Lunev, Alexander N. Penin, Victor I. Sapritsky

Author Affiliations +

Optical Engineering, Vol. 32, Issue 11, (November 1993). https://doi.org/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.

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Vera Moiseevna Ginzburg, N. G. Keratishvili, Y. L. Korzhenevich, G. V. Lunev, Alexander N. Penin, and 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

Published: 1 November 1993

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