Abstract
The authors show, through the analysis of a periodically modulated light beam with a square profile, the improvement in the signal-to-noise ratio by measuring the moment generating function of the number of photopulses, Qn(s, T), with respect to the measurement of the second normalized factorial moment, n(2)(T). An experimental verification in the low light level range (1-10 photoelectrons per period) for different values of the modulation factor has been made. The results and some conclusions are presented.
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