Material that emits white light and tunes the color. (Machine-translation by Google Translate, not

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The present invention relates to a transparent nanostructured glass ceramic obtained from a thermal treatment of a volume precursor glass based on sio 2 and laf 3 doped with three earth ions rare (yb 3 -er 3 -tm 3 ) prepared by the sol-gel technique. The resulting nano-glass ceramic contains nano-sized crystals of laf 3 precipitated after the heat treatment and dispersed in a sio matrix 2 , leaving the rare earth ions incorporated in them. Using infrared excitation of 980 nm and through a luminescent up-conversion process (conversion of infrared to visible energy), white light is generated through the additive synthesis of the red, green and blue emissions. Controlling the excitation incident power, the tuning of the emitted color is achieved with applications in three-dimensional photonic devices : image generators, solid-state lasers, new three-dimensional optical memories and elements integrated in a chip. (Machine-translation by Google Translate, not legally binding)