Red, green and blue light generation in fluoride glasses controlled by double excitation

A new multi-doped fluoroaluminate-based glass was developed to generate, with high accuracy, the three primary light colors simultaneously, allowing additive synthesis of light in the visible spectrum. The ions Er3+ and Tm3+ were used as red, green and blue narrow line emitters, by down-conversion and up-conversion processes. The Tm3+ and Er3+ concentrations in the glass were defined for simulation of the white emission, under double excitation in the infrared and ultraviolet region, allowing color tuning. (C) 2001 Elsevier Science B.V. All rights reserved.