High-performance photorefractive polymer composite with 2-dicyanomethylen-3-cyano-2,5-dihydrofuran chromophore

Wright, Daniel; Gubler, Ulrich; Roh, Yeonsuk; Moerner, W. E.; He, Meng; Twieg, Robert J.
December 2001
Applied Physics Letters;12/24/2001, Vol. 79 Issue 26, p4274
Academic Journal
A nonlinear optical chromophore for photorefractive applications containing a 2-dicyanomethylen- 3-cyano-2,5-dihydrofuran acceptor group is presented. When doped into a plasticized composite of poly(n-vinylcarbazole), large gain coefficients (Γ) are observed with photorefractive speed similar to the best composites reported in the literature while maintaining low sample absorption (∼15 cm[sup -1]). © 2001 American Institute of Physics.


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