Optical nonlinear properties and all optical switching in a synthesized liquid crystal

• Published in: Journal of molecular liquids 2022-09, Vol.361, p.119676, Article 119676
• Main Authors: Al-Hamdani, Uhood J., Hassan, Qusay M.A., Zaidan, Ahmed M., Sultan, H.A., Ali Hussain, Kawkab, Emshary, C.A., Alabdullah, Zainab T.Y.
• Format: Article
• Language: English
• Subjects: AOS; DRPs; Liquid crystal; NIR; Z-scan
• ISSN: 0167-7322; 1873-3166
• DOI: 10.1016/j.molliq.2022.119676

•To characterize the liquid crystal compound NMR, mass spectra, DSC thermogram Marble and Schlieren textures were used.•The nonlinear optical characteristics of the E-OCH3 compound were investigated.•Diffraction ring patterns and Z-scan methods are used to estimate the nonlinear refractive index of this sample.•The sample's All-optical switching property is investigated. A liquid crystal (LC) type 4-((4-(benzothiazol-2-yl) phenyl) diazenyl) −3-hydroxyphenyl 4-methoxybenzoate (E-OCH3) is synthesized and characterized using 1H NMR, mass spectra and DSC thermo gram Marble and Schlieren textures. The DFT WB97XD/6–311+ g(d,p) is used to obtain the LC optimized geometry. The possibility for the optical nonlinear (ONL) properties of the LC are studied using some chemical quantum descriptors (CQDs). The ONL properties are characterized by the determination of the LC nonlinear index of refraction (NIR) through diffraction ring patterns (DRPs) and the Z-scan methods using a continuous wave (CW) low power laser beam. The all-optical switching (AOS) of the LC is characterized using two visible laser beams of wavelengths 473 nm and 532 nm.