- Journal
- Année
- 2006
- Volume
- 6341
- DOI
- 10.1117/12.695374
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.