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Proceedings Paper

Diffraction halo in digital speckle photography
Author(s): Anton A. Grebenyuk; Vladimir P. Ryabukho
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Paper 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.

Paper Details

Date Published: 12 February 2010
PDF: 7 pages
Proc. SPIE 7547, Saratov Fall Meeting 2009: International School for Junior Scientists and Students on Optics, Laser Physics, and Biophotonics, 75470M (12 February 2010); doi: 10.1117/12.855078
Show Author Affiliations
Anton A. Grebenyuk, Saratov State Univ. (Russian Federation)
Vladimir P. Ryabukho, Saratov State Univ. (Russian Federation)
Institute of Precision Mechanics and Control (Russian Federation)


Published in SPIE Proceedings Vol. 7547:
Saratov Fall Meeting 2009: International School for Junior Scientists and Students on Optics, Laser Physics, and Biophotonics
Valery V. Tuchin; Elina A. Genina, Editor(s)

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