A compact and efficient algorithm for digital envelope detection in white light interferograms
is derived from a well-known phase-shifting algorithm. The performance of the new …

We describe a scanning white-light interferometer for high-precision surface structure
analysis. Interferograms for each of the image points in the field of view of the instrument are …

Where conventional testing and inspection techniques fail at the micro-scale, optical
techniques provide a fast, robust, and relatively inexpensive alternative for investigating the …

This paper proposes a white-light phase-shifting method for interferometry, in which the
absolute phase of each point is measured individually. During the axial scanning of the …

In the case of white-light interferometry, the usual phase shifting methods cannot be used
because the modulation in the interference intensity is due to both the phase variation and to …

White-light interferometry is a standard optical tool with which to measure profiles of
discontinuous structures such as diffractive optical elements. But there is one outstanding …

The proposed profilometer is based on an optical spectral analysis of white-light
interferograms. Phase calculation algorithms are applied within the spectral domain for high …

A white-light fiber interferometer working in the spatial domain, using two fiber ends in a
hollow tube as the sensing head and an electric magnetic actuator–mirror reflector as the …

Spectral phase in a white-light interferogram contains information about the absolute optical
path difference (OPD) in the interferometer. Evaluation of spectral phase is therefore …

Accurate volume measurement of droplets in inkjet printed organic light-emitting diode
(OLED) is important to achieve defect-free manufacturing. Although coherence scanning …