ABSOLUTE METER OF PHOTODETECTOR QUANTUM EFFICIENCY BASED ON THE PARAMETRIC DOWN-CONVERSION EFFECT

被引：17

作者：

GINZBURG, VM ^{[1
]}

KERATISHVILI, NG ^{[1
]}

KORZHENEVICH, EL ^{[1
]}

LUNEV, GV ^{[1
]}

PENIN, AN ^{[1
]}

SAPRITSKY, VI ^{[1
]}

机构：

[1] MOSCOW MV LOMONOSOV STATE UNIV,DEPT PHYS,MOSCOW 119899,RUSSIA

来源：

OPTICAL ENGINEERING | 1993年 / 32卷 / 11期

关键词：

PHOTODETECTORS; PARAMETRIC DOWN-CONVERSION EFFECT; RADIATION;

D O I：

10.1117/12.147702

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 10(7) to 10(4) 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.

引用

页码：2911 / 2916

页数：6

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