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

  • Daniel Wright
    Department of Chemistry, Stanford University, Stanford, California 94305-5080
  • Ulrich Gubler
    Department of Chemistry, Stanford University, Stanford, California 94305-5080
  • Yeonsuk Roh
    Department of Chemistry, Stanford University, Stanford, California 94305-5080
  • W. E. Moerner
    Department of Chemistry, Stanford University, Stanford, California 94305-5080
  • Meng He
    Department of Chemistry, Kent State University, Kent, Ohio 44242
  • Robert J. Twieg
    Department of Chemistry, Kent State University, Kent, Ohio 44242

Description

<jats:p>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−1).</jats:p>

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