1 November 1996 Photoinduced birefringence in acceptor-donor azo dye doped in a polymer
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Nonresonant photoinduced birefringence of an acceptor-donor azo dye doped in polymethyl methacrylate film was studied by degenerate four-wave mixing and Z-scan methods with a He-Ne laser. The sample has appreciable large third-order nonlinear susceptibility and polarization sensitivity. The nonlinear mechanism of the material originates from photoinduced birefringence of polar azo molecule.
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Xinxian Bao, Xinxian Bao, Chunfei Li, Chunfei Li, "Photoinduced birefringence in acceptor-donor azo dye doped in a polymer", Proc. SPIE 2852, Nonlinear Optical Properties of Organic Materials IX, (1 November 1996); doi: 10.1117/12.256163; https://doi.org/10.1117/12.256163

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