Nonparaxial, three-dimensional and fractal speckle

Colin J. R. Sheppard

doi:10.1117/12.977790

11 September 2012 Nonparaxial, three-dimensional and fractal speckle

Colin J. R. Sheppard

Proceedings Volume 8413, Speckle 2012: V International Conference on Speckle Metrology; 841302 (2012) https://doi.org/10.1117/12.977790
Event: SPECKLE 2012: V International Conference on Speckle Metrology, 2012, Vigo, Spain

Abstract

Speckle can be modeled by analysis of the statistics of the image of a phase object such as a rough surface. The image can be calculated using the coherent transfer function of the imaging system and the angular spectrum representation. This approach gives a three-dimensional image, and includes the effects of high numerical aperture and the finite depth of the structure. Different correlation coefficients can be assumed, including fractal distributions, such as exponential correlation, as well as Gaussian correlation.

Citation Download Citation

Colin J. R. Sheppard "Nonparaxial, three-dimensional and fractal speckle", Proc. SPIE 8413, Speckle 2012: V International Conference on Speckle Metrology, 841302 (11 September 2012); https://doi.org/10.1117/12.977790

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