This paper describes a polarized-light imaging interferometer to measure the rotation field of reflecting surfaces. This setup is based on a homemade prism featuring a birefringence gradient. The arrangement is presented before focusing on the homemade 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.
© 2013 Optical Society of America
Original Manuscript: March 18, 2013
Manuscript Accepted: May 6, 2013
Published: June 19, 2013
Vol. 8, Iss. 7 Virtual Journal for Biomedical Optics
Thomas Travaillot, Søren Dohn, Anja Boisen, and Fabien Amiot, "Imaging interferometry to measure surface rotation field," Appl. Opt. 52, 4360-4369 (2013)