Optical interferometry is a powerful tool for measuring and characterizing areal surface
topography in precision manufacturing. A variety of instruments based on optical …

Self-calibrating phase-shifting interferometry (PSI) reconstructs the phase map from three-
frame or more phase-shifting interferograms without the need for knowing accurate phase …

In this paper, we proposed a random phase retrieval approach based on two differential
interferograms and VU factorization. Firstly, three interferograms with arbitrary phase shifts …

Differential interference contrast (DIC) microscopy is widely used as a high-contrast imaging
method for observing transparent biological samples. However, the absence of fringes in …

We propose a novel phase demodulation algorithm for phase shifting interferometry (PSI)
named as advanced spatial spectrum fitting (ASSF) algorithm. By utilizing dual-operation of …

Moving a large-aperture reference mirror (RM) with a significant weight through piezoelectric
transducers (PZTs) for phase-shifting introduces considerable challenges and potential …

2-step phase-shifting interferometry (PSI) is an important technology for phase retrieval due
to its outstanding performance in balancing detector bandwidth, temporal resolution, and …

A normalized and orthogonal phase retrieval algorithm based on Lissajous ellipse fitting
(NOLEF) is proposed in this study, which can extract phase distributions under random …

To achieve high measurement accuracy without the restriction of fringe number, a high-
accuracy phase shifting retrieval approach based on phase shifts search (PSS) is proposed …

By using the quadratic spatial filtering (QSF) operation of interferograms, we propose a fast
and accurate phase retrieval algorithm in 2-step phase-shifting interferometry (PSI), in which …