Photon-counting distribution under square-wave intensity modulation

Abstract Periodic modulation effects on a photon-counting distribution were experimentally obtained from an intensity- stabilized tungsten lamp having a superimposed square-wave intensity modulation of 100% depth and 3.33 msec period, for variable observation time intervals from 0.2 to 10 msec. The observed distributions and variances were in good agreement with those calculated from the theoretical equation.