QUASIHETERODYNE METHOD OF INTERFERENCE MEASUREMENTS
a:2:{s:4:"TYPE";s:4:"TEXT";s:4:"TEXT";s:90:"V. I. Guzhov, S. P. Il’yinykh, I. A. Sazhin, E. N. Denezhkin, E. S. Kabak, D. S. Khaidukov";}
Novosibirsk State Technical University, pr. Karla Marksa 20, Novosibirsk, 630073 Russia
Keywords: интерферометрия, пошаговый фазовый сдвиг, interferometry, phase-shifting interferometry
Abstract
A method for measuring a phase difference between two interfering wavefronts on the basis of analyzing the trajectories that are formed by the intensities of pairs of points in a series of interferograms with different phase shifts is proposed. This method does not require a priori knowledge of the actual values of phase shifts.
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