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4 April 2005 A relationship between the optical anisotropy and the optical nonlinearity of a poled polymer film
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Abstract
A uniaxial refractive index anisotropy was introduced by a corona poling. And, and biaxial refractive index anisotropy was introduced by a physical film stretching with the presence of the nonlinear optical chromophore. The refractive indices of the film before poling and after the poling were nx=ny=nz=1.541 and nx=ny=1.539, nz=1.552, respectively. The mechanical stress was then applied to the film to introduce another anisotropy. The refractive indices after the stretching were nx=1.540, ny=1.538, and nz=1.551. We also proposed an in-situ film elongation technique with poling. Above the grass transition temperature, the polymer film is plasticized and can be stretched longer so that the chromophore is reoriented effectively. As a result, the decreasing of film transparency due to the stretching can be prevented by this temperature.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kazuya Takayama, Padraig A. Dunne, Kyoji Komatsu, and Toshikuni Kaino "A relationship between the optical anisotropy and the optical nonlinearity of a poled polymer film", Proc. SPIE 5724, Organic Photonic Materials and Devices VII, (4 April 2005); https://doi.org/10.1117/12.590193
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