Accession Number : ADA302168

Title :   Study and Development of Polymeric Photorefractive Materials.

Descriptive Note : Final technical rept.,

Corporate Author : IBM RESEARCH DIV SAN JOSE CA

Personal Author(s) : Burland, Donald M.

PDF Url : ADA302168

Report Date : 27 NOV 1995

Pagination or Media Count : 32

Abstract : The research program summarized here involved the development of new organic photorefractive polymers, improvements of our understanding of the fundamental phenomena that govern photo refractivity in these polymer systems and an optimization of the material's properties for practical device applications. Of particular emphasis were systems that might be of use as optical limiters in eye and sensor protection devices. At the time that the work supported under this Contract began, photorefractive polymers had just been discovered at IBM's Almaden Research Center. The first polymer system discovered was slow and its steady state diffraction efficiency was small. It was no match for the inorganic crystalline photorefractive materials that had been under investigation for over 20 years at that time. Substantial progress has been made and as a result of this ARPA (ARMY) supported work, photorefractive polymers are now equal in speed and efficiency to some of the best inorganic crystalline systems. Improvements continue to be made both by our group at IBM and by others and there is reason to expect that in the near future the polymeric systems will surpass the inorganic crystals in their photorefractive polymers. jg p1

Descriptors :   *POLYMERS, *PHOTOREFRACTIVE MATERIALS, *INORGANIC MATERIALS, STEADY STATE, OPTICAL EQUIPMENT, OPTIMIZATION, DETECTORS, EFFICIENCY, CRYSTALS, DIFFRACTION, ORGANIC MATERIALS, PROTECTIVE EQUIPMENT, EYE, REFRACTION, LIMITERS.

Subject Categories : Laminates and Composite Materials
      Polymer Chemistry
      Refractory Fibers

Distribution Statement : APPROVED FOR PUBLIC RELEASE