Reference : Almost-common path interferometer using the separation of polarization states for digita...
Scientific journals : Article
Engineering, computing & technology : Electrical & electronics engineering
http://hdl.handle.net/2268/12776
Almost-common path interferometer using the separation of polarization states for digital phase-shifting shearography
English
Rosso, Vanessa mailto [Université de Liège - ULg > Département de physique > Département de physique >]
Renotte, Yvon mailto [Université de Liège - ULg > Département de physique > Département de physique >]
Habraken, Serge mailto [Université de Liège - ULg > > Optique - Hololab >]
Lion, Yves [Université de Liège - ULg > > Physique générale (caract. opt. et magnétique des matériaux) >]
Moreau, V. [> > > >]
Tilkens, B. [> > > >]
Oct-2007
Optical Engineering : The Journal of the Society of Photo-Optical Instrumentation Engineers
Spie-Soc Photoptical Instrumentation Engineers
46
10
Yes (verified by ORBi)
International
0091-3286
Bellingham
[en] shearography ; speckle interferometry ; polarizing device ; phase-shifting ; liquid crystal retarder
[en] An original experimental setup for shearography with metrological applications is presented. 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 placed 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 and a low sensitivity to external disturbances. Moreover, the sensitivity of the interferometer can be easily adjusted for different applications by varying the shearing amount with glass plates of different thicknesses or by moving the shearing device between two lenses along the optical axis. The temporal phase-shifting method is applied through the use of a liquid crystal variable retarder. (c) 2007 Society of Photo-Optical Instrumentation Engineers.
http://hdl.handle.net/2268/12776

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