A simple experiment to demonstrate laser intensity dependence of the photosensitive waveguide film refractive index is presented. Using diffraction measurements with spontaneous gratings we estimated roughly the effective value of the nonlinear index of refraction.
© 2004 Optical Society of America
V. I. Lymar, "About optical nonlinearity of waveguide photosensitive films," in Nonlinear Guided Waves and Their Applications, Technical Digest on CD (Optical Society of America, 2004), paper MC29.
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