Phase-shifting interferometry is a powerful optical technique used to measure small displacements, refractive index changes, and surface profiles with high precision. Over the years, researchers ...
In a traditional, temporal phase-shifting interferometer, a phase shifter (typically a piezo element) alters the position of the reference mirror relative to the test surface to vary the phase ...
Multiple frames can be acquired in many different ways. The reference in a “phase-shifting” Fizeau interferometer is shifted in accurate increments corresponding to the test surface. Such increments ...
the Verifire TM MST acquires phase data from multiple surfaces at the same time using patented wavelength-shifting technology. Report critical metrics from individual parallel window surfaces, ...
The Michelson provides the Doppler shift discrimination ... the sinusoidal interferometer transmission and the input spectrum heterodynes high spectral details to broad moiré patterns, which carry the ...
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