Karolina Waszkowska1, Tarek Chtouki2, Oksana Krupka3, Vitaliy Smokal3, Viviana Figà4, Bouchta Sahraoui1. 1. Laboratory MOLTECH-Anjou, University of Angers, CNRS UMR 6200, 2 Bd Lavoisier, 49045 Angers CEDEX, France. 2. Materials and Subatomic Physics Laboratory, Superior School of Technology, Ibn-Tofail University, Kenitra 14000, Morocco. 3. Faculty of Chemistry, Taras Shevchenko National University of Kyiv, 60 Volodymyrska, 01033 Kyiv, Ukraine. 4. Euro-Mediterranean Institute of Science and Technology (IEMEST), via Michele Miraglia 20, 90100 Palermo, Italy.
Abstract
A series of methacrylic styrylquinoline polymers have been synthesized and characterized by spectroscopic and nonlinear optical (NLO) investigations. The NLO properties of studied polymer compounds in the form of thin films prepared by a spin coating method have been investigated by means of second and third harmonic generation via Maker fringe setup with a laser source at 1064 nm and a pulse duration of 30 ps. The results show strong second harmonic signal dependence on polarization configurations. This second harmonic generation (SHG) response was enhanced by UV-irradiation at 366 nm and doping by ZnO nanoparticles (NPs) (100 nm), while the opposite effect was achieved for a third harmonic generation experiment. Thus, values of second and third order nonlinear susceptibilities were determined by theoretical calculations based on comparative models. The remarkable NLO results presented in this paper expose potential optoelectronic and photonic applications.
A series of class="Chemical">methacrylic styrylquinolineclass="Chemical">pan class="Chemical">polymers have been synthesized and characterized by spectroscopic and nonlinear optical (NLO) investigations. The NLO properties of studied polymer compounds in the form of thin films prepared by a spin coating method have been investigated by means of second and third harmonic generation via Maker fringe setup with a laser source at 1064 nm and a pulse duration of 30 ps. The results show strong second harmonic signal dependence on polarization configurations. This second harmonic generation (SHG) response was enhanced by UV-irradiation at 366 nm and doping by ZnO nanoparticles (NPs) (100 nm), while the opposite effect was achieved for a third harmonic generation experiment. Thus, values of second and third order nonlinear susceptibilities were determined by theoretical calculations based on comparative models. The remarkable NLO results presented in this paper expose potential optoelectronic and photonic applications.
Entities:
Keywords:
UV irradiation; ZnO nanoparticles; methacrylic styrylquinoline polymers; nonlinear optics; nonlinear susceptibility; photochromic polymers; second harmonic generation; third harmonic generation