Analysis of White Light Speckle Imaging

In this paper, we present a new approach for analyzing white light speckle patterns. The paper introduces an analytic model and heuristic explanations for the phenomena using the contrast and intensity statistics of the speckles. Relations between the coherence length, central wavelength and surface roughness are examined. It is shown that the speckle intensity is directly related to the autocorrelation function. We show that the new approach is consistent with previous models using simulation results and experimental data.