H. Nanto et al., LASER-STIMULABLE TRANSPARENT KCLEU CRYSTALS FOR ERASABLE AND REWRITABLE OPTICAL MEMORY UTILIZING PHOTOSTIMULATED LUMINESCENCE, Journal of applied physics, 74(2), 1993, pp. 1445-1447
Intense photostimulated luminescence (PSL) with a peak at 420 nm is ob
served in ultraviolet (UV)-light-irradiated europium-doped potassium c
hloride (KCl:Eu) single crystals. The PSL characteristics of UV-irradi
ated KCl:Eu for optical memory application are studied. The excitation
and emission mechanisms of the 420 nm PSL, which are consistent with
the results obtained, are discussed.