The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 16 4 2019 11 26 Nonlinear optical properties measurement of polypyrrole -carbon nanotubes prepared by an electrochemical polymerization method Nonlinear optical properties measurement of polypyrrole -carbon nanotubes prepared by an electrochemical polymerization method 393 398 1226 10.18869/acadpub.ijpr.16.4.393 FA Shahriari Ghasemi Varnamkhasti Journal Article 2019 11 26 In this work, the optical properties dependence of Multi-Walled Carbon Nanotubes (MWNT) on concentration was discussed. MWNT samples were prepared in polypyrrole by an electrochemical polymerization of monomers, in the presence of different concentrations of MWNTs, using Sodium Dodecyl-Benzen-Sulfonate (SDBS) as surfactant at room temperature. The nonlinear refractive and nonlinear absorbtion indices were measured using a low power CW laser beam operated at 532 nm using z-scan method. The results show that nonlinear refractive and nonlinear absorbtion indices tend to be increased with increasing the concentration of carbon nanotubes. Optical properties of  carbone nanotubes indicate that they are good candidates for nonlinear optical devices In this work, the optical properties dependence of Multi-Walled Carbon Nanotubes (MWNT) on concentration was discussed. MWNT samples were prepared in polypyrrole by an electrochemical polymerization of monomers, in the presence of different concentrations of MWNTs, using Sodium Dodecyl-Benzen-Sulfonate (SDBS) as surfactant at room temperature. The nonlinear refractive and nonlinear absorbtion indices were measured using a low power CW laser beam operated at 532 nm using z-scan method. The results show that nonlinear refractive and nonlinear absorbtion indices tend to be increased with increasing the concentration of carbon nanotubes. Optical properties of  carbone nanotubes indicate that they are good candidates for nonlinear optical devices https://ijpr.iut.ac.ir/article_1226_3210ddbeaa16948a702b6049b8d9a202.pdf