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An instrument has been developed for determining intensity correlation functions of a light beam with high accuracy. It is based on digital storage of the arrival times of up to six photoelectric pulses following a start pulse. The times are stored in the memory of a multichannel analyzer, such that the histogram of arrival times is a direct measure of the form of the intensity correlation function. The correlator allows data to be accumulated at a much higher rate than in a time-to-amplitude converter.
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Chopra et al. (1972) studied this question.
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