Single and double passage interferometric analysis of Pseudo-Random-Phase-Plates

In this paper, we analyze the phase introduced by two Pseudo-Random-Phase-Plates (PRPPs) in the path of a propagating beam, when the PRPPs are inserted as objects (either individually or in-a-combination) in one of the arms of well-known Mach-Zehnder and Michelson's interferometers. A He-Ne laser lasing at 633 nm is used as a source for this purpose. We find that both the PRPPs under consideration behave like non-Kolmogorov turbulence simulators, when introduced individually or jointly. We also notice an interesting phenomenon that the nature of turbulence depends upon the number of passages the beam travels through these PRPPs. More specifically, we witness the tendency of approaching towards Kolmogorov turbulence regime on increasing the number of passages through the given PRPP or PRPPs-in-a-combination.