Two-Photon 3D Optical Data Storage via Aggregate Switching of Excimer-Forming Dyes

A novel optical data storage (ODS) system that relies on the optically-induced switching of the aggregation state and fluorescence of a two-photon absorption dye in a polymer matrix is reported. Well-defined, similar to 3 x 3 x 6 mu m large voxels are written with single focused laser pulses and read by confocal laser scanning microscopy. [GRAPHICS] .