Structural, optical, and nonlinear optical absorption/refraction studies of the manganese nanoparticles prepared by laser ablation in ethanol

► The structural, optical, and nonlinear optical properties of the manganese nanoparticles prepared by laser ablation in various liquids were investigated using the 532 and 1064 nm, 50 ps laser pulses. ► The TEM and spectral measurements showed temporal dynamics of size distribution of Mn nanoparticles in solutions. ► The nonlinear absorption (β = 2 × 10−10 and 4 × 10−11 cm W−1) and positive nonlinear refraction (γ = 8 × 10−15 and 2 × 10−14 cm2 W−1) of picosecond radiation were observed in the Mn colloidal suspensions using the 1064 and 532 nm radiation, respectively.