Nonlinear optical limiting of copper nanoparticles synthesized in silica glass by ion implantation

The nonlinear optical properties of the composite material based on quartz glass with copper nanoparticles synthesized by ion implantation were investigated. The optical limiting effect for laser emission with a wavelength of 532 nm, energy of 18–22 $\mu J$ and pulse duration of 12 ns was observed. Based on $z$-scan measurements the nonlinear absorption factor of $(3.63\pm0.09)\cdot10^{-6}$ m/W was estimated.