Speckle pattern is a phenomenon which has been studied for many years in specialist applications and the first statistics of speckle phenomenon to be published were probably those due to Lord Rayleigh.1 The appreciation of speckle effect was restricted to particular aspects of astronomy before the advent of the laser and its capability of producing highly coherent light.
KeywordsSpeckle Pattern Fringe Pattern Pulse Width Modulation Reference Beam Holographic Interferometry
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