Abstract

본 논문에서는 Wollaston prism을 이용한 Shearography에서 수동소자인 두 개의 Waveplate와 편광판의 조합을 통해 각각 90도의 위상천이를 가지는 4개의 스펙클 패턴을 얻고, 이로부터 스펙클의 각 지점에서의 위상을 얻을 수 있는 방법을 제시하고, Jones 행렬을 이용하여 이론적으로 입증하였다. We presented the method to obtain four speckle interferograms with relative phase shift of π/2 by passive devices such as waveplate and polarizer, calculate the phase at each point of the speckle interferogram in shearography using Wollaston prism, and theoretically demonstrated the feasibility of the proposed method by Jones matrix.

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