Abstract
The present study aims to investigate the optical and structural characteristics of CuMn(2)O(4)GO and CuMn(2)O(4)GOFe(3)O(4) nanocomposites in comparison to CuMn(2)O(4) nanoparticles, with the goal of exploring linear, nonlinear, and photonic applications. X-ray diffraction (XRD) analysis determined the crystallite sizes for CuMn(2)O(4), CuMn(2)O(4)GO, and CuMn(2)O(4)GOFe(3)O(4) samples synthesized by the co-precipitation method to be 16.31, 4.76, and 11.86 nm, respectively. SEM images demonstrate that the particles were generally well-dispersed and mostly spherical to hexagonal in shape. By analyzing the reflectance data through the Tauc model, the direct band gap energies were found to be 2.06 eV, 2.08 eV, and 2.18 eV for CuMn(2)O(4), CuMn(2)O(4)GO, and CuMn(2)O(4)GOFe(3)O(4) samples, respectively. To examine the NLO properties of the nanopowders, the Z-scan method was utilized with a 532 nm Nd: YAG laser at incident powers of [Formula: see text] = 20, 25, and 30 mW. The nonlinear absorption coefficient and refractive index determined by the Z-scan method were approximately (10(3)) and (10(9)), respectively. At [Formula: see text] = 30 mW, for CuMn(2)O(4), CuMn(2)O(4)GO, and CuMn(2)O(4)GOFe(3)O(4), the NLR and NLA reverse saturable absorption reactions are observed at 3.04 × 10(-9), 3.98 × 10(-9), and 10.3 × 10(-9) m(2)/W, and 8.6 × 10(-3), 6.4 × 10(-3), and 5 × 10(-3) m/W, respectively. The exceptional nonlinear optical (NLO) coefficients of the prepared nanopowders emphasize their potential for creating ultrafast lasers, anti-laser optical limiters, and two-photon microscopy.