Abstract
A scaling law obeyed by photon number fluctuations near threshold in the Ginzberg-Landau theory of second order phase transition is described. Normalized factorial moments are found to scale as F r ∼ F β r 2, r ⩾ 3. The results from photon counting experiments on laser fluctuations near threshold are shown to support this scaling law. It is found that β r = ( r − 1) v , where v = 1.304. Implication of the scaling behavior is discussed.
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