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Advanced Materials, Vol.20, No.17, 3199-3199, 2008
Thick optical-quality films of substituted polyacetylenes with large, ultrafast third-order nonlinearities and application to image correlation
Ring-opening metathesis polymerization of mono-substituted cyclooctatetraenes is used to form optical-quality films of polyacetylenes with large chi((3)) of up to 2.1 x 10(-10) esu in the near-infrared (1300-1550 nm). Thick films of such materials provide large diffraction efficiencies in ultrafast image-correlation applications.