An almost-common path shearographic interferometer using the separation of the polarization states

Vanessa Rosso; Fabrice Michel; Vincent Moreau; Yvon Renotte; Bernard Tilkens; Yves Lion

doi:10.1117/12.695374

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15 September 2006 An almost-common path shearographic interferometer using the separation of the polarization states

Vanessa Rosso, Fabrice Michel, Vincent Moreau, Yvon Renotte, Bernard Tilkens, Yves Lion

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Proceedings Volume 6341, Speckle06: Speckles, From Grains to Flowers; 63411I (2006) https://doi.org/10.1117/12.695374
Event: Speckle06: Speckles, From Grains to Flowers, 2006, Nimes, France

Abstract

An original experimental setup for shearography with metrological applications is presented herein. The simplicity and the efficiency of the setup are provided by a shearing device, a prism that separates the TE and TM polarization modes with a coating and a thin glass plate attached on its face. The use of this shearing device enables an in-line and almost-common path configuration for the shearing interferometer, a path that leads to high stability of the interferometer and a low sensitivity to external disturbances. Moreover the sensitivity of the interferometer can be easily adjusted for different applications. The temporal phase shifting method is applied through the use of a liquid crystal variable retarder.

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Vanessa Rosso, Fabrice Michel, Vincent Moreau, Yvon Renotte, Bernard Tilkens, and Yves Lion "An almost-common path shearographic interferometer using the separation of the polarization states", Proc. SPIE 6341, Speckle06: Speckles, From Grains to Flowers, 63411I (15 September 2006); https://doi.org/10.1117/12.695374

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