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Proceedings Paper

Robust retrieval of optical surfaces phase maps in sub-Nyquist multi-wavelength interferometry
Author(s): Pavel Psota; Vít Lédl; Petr Vojtíšek; Ondřej Matoušek
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Paper Abstract

This paper reports on phase retrieval method in non-nulling dual-wavelength interferometry. It uses synthetic phase as shape estimation for determination of fringe orders within every pixel. The fringe order map is subsequently used for unwrapping of phase measured at shorter wavelengths. It was experimentally shown that even for inaccurate synthetic phase, the computed phase for short wavelength is correct. The key point is in analysis of phase fields in spatial derivatives where the sensitivity to phase distortions is lower instead of analyzing the phase fields themselves.

Paper Details

Date Published: 11 November 2016
PDF: 7 pages
Proc. SPIE 10151, Optics and Measurement International Conference 2016, 1015113 (11 November 2016); doi: 10.1117/12.2256837
Show Author Affiliations
Pavel Psota, Institute of Plasma Physics of the ASCR, v.v.i. (Czech Republic)
Vít Lédl, Institute of Plasma Physics of the ASCR, v.v.i. (Czech Republic)
Petr Vojtíšek, Institute of Plasma Physics of the ASCR, v.v.i. (Czech Republic)
Ondřej Matoušek, Institute of Plasma Physics of the ASCR, v.v.i. (Czech Republic)


Published in SPIE Proceedings Vol. 10151:
Optics and Measurement International Conference 2016
Jana Kovacicinova, Editor(s)

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