Suppression of fringe-modulating in-plane displacement fields in shearing speckle interferometry

Tuck Wah Ng; Fook Siong Chau

doi:10.1117/12.145534

28 May 1993 Suppression of fringe-modulating in-plane displacement fields in shearing speckle interferometry

Tuck Wah Ng, Fook Siong Chau

Proceedings Volume 1821, Industrial Applications of Optical Inspection, Metrology, and Sensing; (1993) https://doi.org/10.1117/12.145534
Event: Applications in Optical Science and Engineering, 1992, Boston, MA, United States

Abstract

Shearing speckle interferometry using the wedge arrangement yields displacement derivative fringes that are modulated by in-plane displacement fields. In this paper, it is found that using a biprism instead of a wedge suppresses the in-plane displacement modulation effect without affecting the visibility of the displacement derivative fringes.

Citation Download Citation

Tuck Wah Ng and Fook Siong Chau "Suppression of fringe-modulating in-plane displacement fields in shearing speckle interferometry", Proc. SPIE 1821, Industrial Applications of Optical Inspection, Metrology, and Sensing, (28 May 1993); https://doi.org/10.1117/12.145534

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