Author:
Matsuo S.,Yugami H.,Ishigame M.,Shin S.
Abstract
Long-lived or persistent spectral hole-burning has been observed in many rare-earth doped glasses and crystals [1]. In Eu3+ doped solids, hole-burning due to optical pumping of nuclear quadrupole levels has been observed. In Pr3+ doped solids, local ion rearrangement around Pr3+ often causes hole-burning. Macfarlane and co-workers have reported persistent spectral hole-burning in SrF2: Pr3+ and CaF2: Pr3+ [2, 3]. They have concluded that the light-induced D− ion motion causes the hole burning. In contrast with organic materials, such proton related hole-burning has not been reported so much in inorganic solids.