Study of Third Order Optical Nonlinearity in DASPB Dye-Doped Polymer Films Using CW Laser
作者： G. K. Bhat , Shubhrajyotsna Aithal , P. S. Aithal
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摘要: The optimum self-focussing materials with an intensity-dependent refractive index and the realization of ability these to produce intensity dependent phase shift in all-optical photonic devices have become a topic continuous investigation. Many organic including dye-doped polymer films are creating interest due their advantages terms enhanced efficiency, mechanical properties fabricate reliable devices. In this paper, we studied nonlinear optical like absorption refraction two-photon fluorescent dye DASPB doped Polymethyl methacrylate-methacrylic acid (PMMA-MA) matrix using open aperture closed Z-scan experimental methods by means low power wave (CW) laser beam. limiting also Type 1 2 configurations at different input powers beams 532 nm wavelength. n2, coefficient β, changes intensity, magnitude third-order nonlinearity film experimentally determined. saturated output for type threshold level both recorded. PMMA-MA has shown saturation lower irradiance reverse along higher hence found be potential candidate third harmonic property based
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