Bio-mediated green synthesis of copper oxide nanoparticles using plant extract and its applications to optical switching in nonlinear optics
Rajabhuvaneswari Ariyamuthu, G. Murali, Natarajan Arumugam, Abdulrahman I. Almansour, Kasireddy Sudarshan, S. Jeyaram
Abstract
This paper reports the bio-mediated green route for the synthesis of copper oxide (CuO) nanoparticles (NPs) using morinda citrifolia leaf extract. The morinda citrifolia leaf extract was used as a reducing and capping agent for the synthesis of CuO NPs. The CuO NPs was characterized by UV-Visible, FT-IR, FT-Raman, XRD and SEM techniques. The functional group of the CuO NPs were studied using FT-IR and FT-Raman techniques. The green synthesized CuO NPs exhibited crystalline property and the average crystal size was measured to be 15.13 nm. The morphology of the CuO NPs was examined via SEM technique. Third-order nonlinear optical (NLO) features of the CuO NPs were studied using diode laser working at 405 nm wavelength. The nonlinear refractive index and nonlinear absorption coefficient CuO NPs exhibited self-defocusing and saturable absorption (SA) behavior. The nonlinear refractive index and nonlinear absorption coefficient of CuO NPs were calculated to be − 9.29 x 10−11 m2/W and − 1.45 x 10−4 m/W. Third-order NLO susceptibility of CuO NPs was determined to be 3.02 x 10−6 esu. The results of the study provide a framework for the green synthesis of CuO NPs for NLO applications in optoelectronics and photonics.