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• W1993219141 startingPage "969" @default.
• W1993219141 abstract "The scattering of coherent monochromatic light at an optically rough surface, such as a diffuser, produces a speckle field, which is usually described by reference to its statistical properties. For example, the real and imaginary parts of a fully developed speckle field can be modeled as a random circular Gaussian process. When such a speckle field is used to illuminate a second diffuser, the statistics of the resulting doubly scattered field are in general no longer Gaussian, but rather follow a K distribution. In this paper we determine the space-time correlation function of such a doubly scattered speckle field that has been imaged by a single lens system. A space-time correlation function is derived that contains four separate terms; similar to the Gaussian case it contains an average DC term and a fluctuating AC term. However, in addition there are two terms that are related to contributions from each of the diffusers independently. We examine how our space-time correlation function varies as the diffusers are rotated at different speeds and as the point spread function of the imaging system is changed. A series of numerical simulations are used to confirm different aspects of the theoretical analysis. We then finish with a discussion of our results and some potential applications, including controlling spatial coherence and speckle reduction." @default.
• W1993219141 created "2016-06-24" @default.
• W1993219141 creator A5002286841 @default.
• W1993219141 creator A5018484313 @default.
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• W1993219141 date "2013-04-23" @default.
• W1993219141 modified "2023-10-02" @default.
• W1993219141 title "K speckle: space–time correlation function of doubly scattered light in an imaging system" @default.
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• W1993219141 doi "https://doi.org/10.1364/josaa.30.000969" @default.
• W1993219141 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/23695330" @default.
• W1993219141 hasPublicationYear "2013" @default.
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