The optical properties of silver nanoparticles obtained by laser ablation and "green" synthesis were investigated. The aim of the work was to obtain silver nanoparticles with desired properties and study absorption spectra to compare the temporal stability of solutions of silver nanoparticles. For the obtained samples with silver nanoparticles, absorption spectra were measured, electron spectroscopy data were obtained, and the properties of silver nanoparticles obtained by different methods were compared.

Several generalizations of the approximation of the effective Bruggeman medium using elliptic cells are compared, namely the “uniaxial” anisotropic approximation and two isotropic models averaged over random orientations and random conductivities of particles, allowing one to consider multicomponent composites with different filler particles.