The study of nonlinear optical properties of rhodamine B dye and TiO2 nanoparticles doped in PMMA polymer

الملخص EN

In this research, A thin film of Rhodamine B dye and TiO2Nanoparticles doped in PMMA Polymerhas been prepared by acasting method.

The sample was spectrum absorption by UV-Vis.

The nonlinear optical properties were measured by Z- scan technique using Nd:YAG laser with (1064 nm) wavelength.

The nonlinear refractive index (n2) and nonlinear absorption coefficient (β) were estimated for the thin film for different energies of the laser, n2 and β were decreased with increasing intensity of incident laser beam.

Also, the type of β was two-photon absorption and n2 negative nonlinear reflective.