Diffraction halo in digital speckle photography

Anton A. Grebenyuk; Vladimir P. Ryabukho

doi:10.1117/12.855078

11 February 2010 Diffraction halo in digital speckle photography

Anton A. Grebenyuk, Vladimir P. Ryabukho

Proceedings Volume 7547, Saratov Fall Meeting 2009: International School for Junior Scientists and Students on Optics, Laser Physics, and Biophotonics; 75470M (2010) https://doi.org/10.1117/12.855078
Event: Saratov Fall Meeting 2009, 2009, Saratov, Russian Federation

Abstract

The effects of diffraction halo normalization and specklegrams nonlinear processing on the diffraction halo shape and digital speckle photography measurements accuracy and sensitivity are considered. By numerical simulation of digital speckle photography in Fourier plane of a plane object tilt it is shown that diffraction halo normalization leads to improvement of the diffraction halo fringes spacing determination and, consequently, speckle photography method accuracy increase. Next, it is shown that specklegrams nonlinear processing leads to the diffraction halo region broadening and measurements sensitivity increase. These results can be used for improvement of the accuracy and sensitivity of the digital speckle photography method.

Citation Download Citation

Anton A. Grebenyuk and Vladimir P. Ryabukho "Diffraction halo in digital speckle photography", Proc. SPIE 7547, Saratov Fall Meeting 2009: International School for Junior Scientists and Students on Optics, Laser Physics, and Biophotonics, 75470M (11 February 2010); https://doi.org/10.1117/12.855078

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