Optical properties of core-shell gold-silver and silver-gold nanoparticles for some laser wavelengths

Computer calculation of optical properties of core-shell metal nanoparticles was made for some laser wavelengths. Efficiency factors of absorption, scattering and extinction by spherical core-shell gold-silver and silver-gold nanoparticles of the radiuses in the range 5-100 nm and for laser wavelengths 400, 532 and 800 nm were calculated. Analysis of influence of optical parameters of metals, radiuses of core and thicknesses of shell on optical properties of nanoparticles was made.