Optical EngineeringPolarization approach to high-sensitivity moire interferometry
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An implementation ofthe phase-shifting technique for computer-aided processing of interference fringes obtained by the moiré interferometry method for in-plane displacement measurements is described. Polarized light is used for both temporal and spatial (multichannel) approaches. The latter approach enables work at a single-frame rate. The experimental results obtained serve as a comparison of the two approaches.