Correlation of speckle patterns generated by laser point source — Illuminated diffusers |
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Authors: | Y Dzialowski M May |
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Institution: | Laboratoire d''Optiquw et Institut d''Optique, Université P. et M. Curie tour 13, 3ème étage, 4 place Jussieu, 75230 Paris cedex 05, France |
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Abstract: | In this paper it is shown that, when a ground-glass transilluminated by a diverging or converging beam is axially translated, there exists a particular plane in which the corresponding speckle pattern remains correlated. Consequently, under some experimental conditions on this incident beam and the geometry of the optical setup, a speckle pattern generated by a set of two parallel ground-glasses suffers no decorrelation when one of them is axially or laterally translated. |
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