Novel Organic Polymer Films for Real-time Holographic Processing

摘要

This Phase I STTR was to develop and commercialize new technologies based onstate-of-the-art photorefractive organic polymer films recently developed at the University of Arizona. During Phase I emphasis was placed on developing an optical device that can perform fast, high resolution, whole field (imaged), profile measurements of three-dimensional (3D) objects. A breadboard system was constructed that could be switched between a digital holographic arrangement and a real-time holographic interferometer which incorporated the photopolymer. A number of objects were measured and the best results were obtained with the digital holographic arrangement. A multi-wavelength processing algorithm was implemented to process the discontinuous changes in height of the objects. The profile measurements had a resolution of 80 microns in the z direction and was limited by the tuning range of the laser diode. For future systems the resolution is expected to be improved down to 0.4 microns. The fast unwrapping of discontinuous fringes across the object was a major milestone for the Phase I research. The quantitative 3D measurement system has numerous commercial applications in the aerospace, manufacturing and medical industries.