METHOD FOR WRITING AND READING DATA BY FLUORESCENCE ON A LIGHT-SENSITIVE SUBSTRATE, AND RELATED SUBSTRATE AND DEVICES

摘要

The invention relates to a method for the three-dimensional recording of data on a substrate made of a transparent light-sensitive material including at least one dopant, said method including: a first step of calibrating and testing a pulsed light source, which includes calibrating the number of pulses, the level of fluence of each pulse emitted and the pulse rate; a step of inscribing an area of the material. The fluence of each pulse emitted, the number of pulses and the pulse rate are suitable for irradiating the material in said area such as to form stabilised fluorescent aggregates from the dopant while minimising the modification of the refractive index and the absorption coefficient of the substrate in a wavelength spectrum from visible to near infrared.