Imaging interferometry to measure surface rotation field

Thomas Travaillot (1) , Soren Dohn (2) , Anja Boisen (2) , Fabien Amiot (1)

1 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)
2 DTU - Danmarks Tekniske Universitet = Technical University of Denmark

This paper describes a polarized light imaging interfe-rometer to measure the rotation field of reflecting surfaces. This set-up is based on a home-made prism featuring a birefringence gradient. The arran-gement is presented before focusing on the home-made prism and its manufacturing process. The dependence of the measured optical phase on the rotation of the surface is derived, thus highlighting the key parameters driving the sensitivity. The system's capabilities are illustrated by imaging the rotation field at the surface of a tip-loaded polymer specimen.

Domaines: Mécanique [physics.med-ph]

Thomas Travaillot, Soren Dohn, Anja Boisen, Fabien Amiot. Imaging interferometry to measure surface rotation field. Applied optics, 2013, 52 (18), pp.4360-4369. ⟨10.1364/AO.52.004360⟩. ⟨hal-00835909⟩