An application of optical fiber Fizeau interferometer to the detection of internal and surface defects in metal
Sign Up to like & getrecommendations! Published in 2019 at "Chemical Physics Letters"
DOI: 10.1016/j.cplett.2019.04.004
Abstract: Abstract In this study, we detected the surface defect and internal defects up to 0.3 mm with accuracy of a relative discrepancy of 5% or less by using the arrival time difference of the reflected Rayleigh… read more here.
Keywords: optical fiber; fizeau interferometer; fiber fizeau; surface ... See more keywords
Modelling and correction for polarization errors of a 600 mm aperture dynamic Fizeau interferometer.
Sign Up to like & getrecommendations! Published in 2020 at "Optics express"
DOI: 10.1364/oe.409983
Abstract: The polarization errors of large aperture dynamic interferometers based on the polarization phase shifting method are mainly coming from the effects of imperfect polarized elements and birefringence of large elements. Using the Lissajous ellipse fitting… read more here.
Keywords: polarization errors; fizeau interferometer; polarization; aperture dynamic ... See more keywords
Dynamic Fizeau interferometer with assistant defocused source.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.453426
Abstract: We report and demonstrate a dynamic Fizeau interferometer (DFI) capable of high-precision measurements under severe vibration. The method involves two interferometric passes: a null-interference pass (NP) and a circular carrier-frequency pass (CP). The NP adopts… read more here.
Keywords: assistant defocused; defocused source; interferometer; dynamic fizeau ... See more keywords
Uncertainty Evaluation for Measurements of Pitch Deviation and Out-of-Flatness of Planar Scale Gratings by a Fizeau Interferometer in Littrow Configuration
Sign Up to like & getrecommendations! Published in 2018 at "Applied Sciences"
DOI: 10.3390/app8122539
Abstract: Form errors of a planar scale grating, such as pitch deviations and out-of-flatness, are major contributors to the final measurement uncertainty of an interferential scanning-type planar encoder. Following the previous work, in which a method… read more here.
Keywords: fizeau interferometer; uncertainty; littrow configuration; uncertainty evaluation ... See more keywords