0469351 - ÚFP 2017 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Matoušek, O. - Lédl, V. - Psota, P. - Vojtíšek, Petr
Methods for refractive-index homogeneity calculation using Fourier-transform phase-shifting interferometry.
Proceedings of SPIE 10151, Optics and Measurement International Conference 2016. Vol. 10151. Bellingham: SPIE, Society of Photo-Optical Instrumentation Engineers, 2016 - (Kovačičinová, J.), č. článku 101510Y. SPIE. ISBN 978-1-5106-0753-8. ISSN 0277-786X.
[OAM 2016, Optics and Measurement International Conference 2016. Liberec (CZ), 11.10.2016-14.10.2016]
Grant CEP: GA MŠMT(CZ) LO1206
Institucionální podpora: RVO:61389021
Klíčová slova: refractive-index homogeneity * Fourier-transform phase-shifting interferometry
Kód oboru RIV: JB - Senzory, čidla, měření a regulace
Web výsledku:
http://dx.doi.org/10.1117/12.2256991DOI: https://doi.org/10.1117/12.2256991

Fourier-transform phase-shifting interferometry brings the possibility of a very precise measurement of refractive-index variation in a material. In a four-surface cavity, six first order interferograms are observed. In the standard way, an interference between waves reflected from a front and a rear surface of a sample is used to obtain refractive-index homogeneity. But another three interferograms contain information about inner inhomogeneity and can be used for its calculation as well. In this paper, all four calculation methods are presented and compared. The measurements and simulations show the methods give us globally similar outputs. However, due to calculation from different interferograms, every result is affected by different undesirable effects. This difference can be used for suppression of the effects and thus to refine the results.
Trvalý link: http://hdl.handle.net/11104/0267149