Light emission of Cu+ doped porous silica glass for volumetric three-dimensional solid state display

Abstract

Cu-doped nanoporous silica glass was prepared and broadband upconversion luminescence was observed when excited with a 800 nm femtosecond laser. The optical properties of the Cu-doped nanoporous silica glass were investigated by absorption, steady state excitation and emission, luminescence decay and time-resolved spectroscopy. The analysis of the upconversion mechanism indicates that three-photon absorption is responsible for the visible luminescence. A three-dimensional solid state display was also demonstrated and the full colorization of a volumetric three-dimensional solid state display could be made possible by designing and controlling the combination of doping species in the nanoporous silica glass.