Photon counting statistics of gaussian light

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Abstract

It is well known that the photocount distribution associated with the photoelectric detection of fluctuating light beams carries information about the probability density of the light intensity. In this paper, we present an exact solution to a problem of particular interest which arises in connection with the photoelectric detection of narrow-band Gaussian (thermal or pseudothermal) light, namely, the problem of determining the photocount distribution when the counting-time interval is not necessarily short compared to the coherence time of the light. The method developed in this paper is applied to the case where the spectral profile of the light is Lorentzian; it leads to an exact expression for the photocount generating function and it provides simple recurrence relations for the photocount distribution and for its factorial moments. © 1966 The American Physical Society.

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Bédard, G. (1966). Photon counting statistics of gaussian light. Physical Review, 151(4), 1038–1039. https://doi.org/10.1103/PhysRev.151.1038

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