Thickness is a typical parameter related to length, of which measurements are conducted in
various industrial fields, such as the automotive, aviation, ship-building, semiconductor, and …

Refractive index is an important optical parameter that can be used to characterize the
physicochemical properties of pharmaceutical solids. The complexity of most drugs and …

Wavelength-scanning interferometry permits the simultaneous measurement of variations in
surface shape and optical thickness of a nearly parallel plate. Interference signals from both …

We present a quantitative phase microscopy scheme that simultaneously acquires two
phase images at different wavelengths. The simultaneous dual-wavelength measurement …

We developed an accurate and efficient method for measuring the refractive indices of a
transparent plate by analyzing the transmitted intensity versus angle of incidence. By using …

We have proposed a modified method to improve the measurement uncertainty of the
geometrical thickness and refractive index of a silicon wafer. Because measurement …

Compression molding of glass optical components is a high volume near net-shape
precision fabrication method. In a compression molding process, a variation of the refractive …

We introduce a technique to measure transparent glass slab thickness. It employs a very
simple setup combining two interferometers: a forward-going beam scheme and a self …

In this study, a 6N–5 phase shifting algorithm comprising a polynomial window function and
discrete Fourier transform is developed for the simultaneous measurement of the surface …

We propose and realize a modified spectral-domain interferometer to measure the physical
thickness profile and group refractive index distribution of a large glass substrate …