Abstract
Abstract Three mixed ligand nickel(II) complexes were synthesized and characterized by UV–visible, IR, MS and elemental analysis. Their off-resonant third-order nonlinear optical properties were measured using femtosecond laser and degenerate four-wave mixing technique. The third-order nonlinear optical susceptibilities χ (3) were 3.20–3.51 × 10 −13 esu. The nonlinear refractive indexes n 2 were 5.89–6.45 × 10 −12 esu. The second-order hyperpolarizabilities γ of the molecules were 3.20–3.50 × 10 −31 esu. The response times were 55–81 fs. The results show that these complexes have potential nonlinear optical applications.
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