Abstract
The deformation of an object illuminated from two directions is recorded once on a hologram as a series of two-dimensional, grating-like interference fringes. The transparency on which the reconstructed interferogram is recorded acts as a modulated diffraction grating (MDG). When the MDG is illuminated by two plane waves and two suitably selected components of its Fourier spectrum are superposed and spatially filtered, two-beam interferograms which represent in-plane and out-of-plane components of deformation are obtained separately. Fringe multiplication was also possible. The interferogram of in-plane deformation corresponding to a spacing of 0·224 μm per fringe was obtained experimentally.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.