Photoinduced variation of the Stokes parameters of light passing through thin films of azopolymer-based hybrid organic/inorganic materials

19th International Summer School on Vacuum, Electron and Ion Technologies

Berberova, Nataliya^1 ; Nazarova, Dimana^1 ; Nedelchev, Lian^1 ; Blagoeva, Blaga^1 ; Kostadinova, Desislava^1 ; Marinova, Vera^1 ; Stoykova, Elena^1

Acad. J. Malinowski Institute for Optical Materials and Technologies, Bulgarian Academy of Sciences, Acad. G. Bonchev str., bl. 109, Sofia

1113, Bulgaria^1

关键词: Full informations;    Function of time;    Hybrid organic/inorganic materials;    Inorganic nanoparticle;    Linearly polarized light;    Photo-induced;    Polarization response;    Stokes parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/700/1/012032/pdf
DOI  :  10.1088/1742-6596/700/1/012032

来源: IOP

【 摘 要 】

Hybrid materials synthesized by combining polymers and inorganic nanoparticles (NPs) have received considerable attention recently due to their advantageous electrical, optical, or mechanical properties. Here we present a polarimetric study of thin films prepared from photoanisotropic hybrid materials: azopolymer (poly [1-[4-(3-carboxy-4-hydroxyphenylazo)benzenesulfonamido]-1,2-ethanediyl, sodium salt]) doped with different concentrations of ZnO NPs with sizes below 50 nm. To obtain full information about the polarization response of these thin films, we determined the kinetics of the Stokes parameters of light passing through the films on illumination by linearly polarized light within the absorption band of the material, namely 473 nm. Using the Stokes parameters, the birefringence values were calculated as a function of time and compared for the films with different NP concentrations.