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Proceedings Paper

Adaptive wavefront sensor based on the Talbot effect
Author(s): Dmytro V. Podanchuk; Vitaliy N. Kurashov; Andrey V. Kovalenko; Volodymyr P. Dan’ko; Myhailo M. Kotov; Nataliya S. Goloborodko
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Paper Abstract

The possibilities of wavefront curvature measuring by Talbot sensor are theoretically and experimentally investigated. A new method of wavefront aberrations measurement is proposed and demonstrated. It is based on the observation of the Talbot effect when the diffraction grating is adapted to the wavefront curvature of the analyzed wave. Herewith, the observation plane stay fixed and corresponds to the Talbot length for a plane wave. It is shown that the measurement range can be made several times wider, with the help of the adaptive Talbot sensor, by retaining the required angular sensitivity. A possibility of self-reproduction of the rectangular grating (with different periods along the axes) by the astigmatic wavefront is experimentally demonstrated. The possibility of the experimental realization of the adaptive Talbot sensor using the dynamic spatial light modulator is demonstrated.

Paper Details

Date Published: 30 November 2015
PDF: 9 pages
Proc. SPIE 9809, Twelfth International Conference on Correlation Optics, 98090A (30 November 2015); doi: 10.1117/12.2219744
Show Author Affiliations
Dmytro V. Podanchuk, National Taras Shevchenko Univ. of Kyiv (Ukraine)
Vitaliy N. Kurashov, National Taras Shevchenko Univ. of Kyiv (Ukraine)
Andrey V. Kovalenko, National Taras Shevchenko Univ. of Kyiv (Ukraine)
Volodymyr P. Dan’ko, National Taras Shevchenko Univ. of Kyiv (Ukraine)
Myhailo M. Kotov, National Taras Shevchenko Univ. of Kyiv (Ukraine)
Nataliya S. Goloborodko, National Taras Shevchenko Univ. of Kyiv (Ukraine)


Published in SPIE Proceedings Vol. 9809:
Twelfth International Conference on Correlation Optics
Oleg V. Angelsky, Editor(s)

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