Accession Number : ADA304336

Title :   Study and Development of Polymeric Photorefractive Materials.

Descriptive Note : Final rept. 30 Sep 91-30 Sep 95,

Corporate Author : IBM ALMADEN RESEARCH CENTER SAN JOSE CA

Personal Author(s) : Burland, Donald M.

PDF Url : ADA304336

Report Date : 21 NOV 1995

Pagination or Media Count : 33

Abstract : The research program summarized here involved the development of new organic photorefractive polymers, improvements of our understanding of the fundamental phenomena that govern photorefractivity in these polymer systems and an optimization of the materials 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 Army (ARPA) 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 p4

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

Subject Categories : Refractory Fibers
      Polymer Chemistry
      Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE