Multilevel optical data storage in a Eu2+/Ho3+ doped Ba2SiO4 phosphor with linear mapping between ultraviolet excitation and a thermoluminescence/photostimulated luminescence response

Multilevel optical storage is realized by using a Ba 2 SiO 4 : Eu 2+ ,Ho 3+ phosphor due to its linear property between excitation and optical/thermal stimulation response.