Measured element phase-shifting interferometry with a single piezoelectric transducer and low-friction workbench
Sign Up to like & getrecommendations! Published in 2020 at "Optics and Lasers in Engineering"
DOI: 10.1016/j.optlaseng.2019.105847
Abstract: Abstract Moving a large-aperture reference mirror (RM) with a significant weight through piezoelectric transducers (PZTs) for phase-shifting introduces considerable challenges and potential problems in conventional reference mirror phase-shifting interferometry (RMPSI). In this report, we present… read more here.
Keywords: phase; shifting interferometry; element phase; measured element ... See more keywords
Joint least-squares algorithm correcting phase-shift errors and detector nonlinearity simultaneously in phase-shifting interferometry.
Sign Up to like & getrecommendations! Published in 2023 at "Applied optics"
DOI: 10.1364/ao.484451
Abstract: Phase-shifting interferometry may suffer from the errors caused by the miscalibration of the phase shifter and the nonlinearity of the detector simultaneously. These errors are not easy to eliminate because they are generally coupled with… read more here.
Keywords: shifting interferometry; phase shifting; joint least; phase ... See more keywords
Phase-shifting interferometry based on dynamic mode decomposition.
Sign Up to like & getrecommendations! Published in 2023 at "Applied optics"
DOI: 10.1364/ao.488418
Abstract: A phase retrieval algorithm in phase-shifting interferometry is presented based on dynamic mode decomposition (DMD). The complex-valued spatial mode obtained from the DMD of phase-shifted interferograms allows the derivation of the phase estimate. At the… read more here.
Keywords: shifting interferometry; dynamic mode; phase shifting; mode decomposition ... See more keywords
Simulated wrapped phase optimizes phase retrieval in phase-shifting interferometry.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.476543
Abstract: Phase retrieval is crucial in phase-shifting interferometry and other phase measurement techniques. However, in noisy wrapped phase maps with high steepness, discontinuities arise and cause phase unwrapping errors. To solve this problem, this Letter presents… read more here.
Keywords: shifting interferometry; phase shifting; wrapped phase; phase retrieval ... See more keywords
Phase shifting interferometry based on a vibration sensor - feasibility study on elimination of the depth degeneracy
Sign Up to like & getrecommendations! Published in 2017 at "Journal of the Korean Physical Society"
DOI: 10.3938/jkps.70.687
Abstract: We proposed novel phase-shifting interferometry using a fiber-optic vibration sensor. The Doppler shift in the coiled fiber caused by vibrations can be used to detect the vibrations by using a fiber-optic interferometer. The principle can… read more here.
Keywords: phase; shifting interferometry; vibration; vibration sensor ... See more keywords