Abstract

Phase-shifting techniques have been successfully implemented to yield the phase from sinusoidally modulated intensity fields in interferometry. However, when the intensity fields are that of squared sinusoidal modulation, as in the case of photoelasticity, implementation of existing phase-shift operations will result in error. An operation is outlined to derive faultlessly the phase in computer-aided photoelasticity.

© 1995 Optical Society of America

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