Copper-containing potassium-alumina-borate glass structure and nonlinear optical properties correlation

The paper describes the technology of obtaining potassium-alumina-borate glass with nanocrystalls of copper chloride. Glass has transmission more than 75 % in visible range and nonlinear threshold less than 10^-5 Joules (at the wavelength of 532 nm). Such low threshold can be explained by special structure of copper-containing nanophase in potassium-alumina-borate glass. In PAB glass low-melting temperatures of nanophase induce nonlinear effects in optics. In phosphate glass copper ions and clusters are responsible for optical nonlinearity.