Advanced optical storage phosphor materials for erasable and rewritable optical memory utilizing photostimulated luminescence

The Boolean logic operations such as OR, AND and NOR are demonstrated using photostimulated luminescence (PSL) phenomenon in the imaging plate (IP) which is made by BaFBr:Eu photostimulable phosphor. The PSL in Eu and Sm co-doped SrS (SrS:Eu,Sm) phosphor ceramics is studied in order to develop a smart erasable and rewritable optical memory utilizing PSL phenomenon, because the SrS:Eu,Sm phosphor ceramics which are excited with UV-light or visible light exhibits an intense PSL, compared with that in UV-irradiated IP. Intense PSL with a peak at about 600 nm is observed in SrS:Eu,Sm phosphor ceramics which is stimulated with infrared light after irradiation with ultraviolet-(UV) light or visible-light. The PSL characteristics of SrS:Eu,Sm phosphor ceramics as a photostimulable material for the optical memory are reported.© (1999) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.