Growth and holographic storage properties of Mg:Mn:Fe:LiNbO_3 crystals

摘要

Mg(3mol%):Mn:Fe:LiNbO_3 and Mg(7mol%):Mn:Fe:LiNbO_3 crystals have been grown by doping 3mol%, 7mol% MgO in Mn:Fe:LiNbO_3, respectively. It was found that light scattering resistance ability of Mg(7mol%):Mn:Fe:LiNbO_3 is two orders of magnitude higher than that of Mn:Fe:LiNbO_3 crystals. In Mg:Mn:Fe:LiNbO_3 crystal, Mn is deep level and Fe is shallow level. We selected Mg(3mol%):Mn:Fe:LiNbO_3 as the storage medium to carry the two-photon holographic storage experiment by using He-Ne laser as recording light and ultraviolet (UV) light as sensitizing light. The single photon recording and erasure curves as well as those of double photon were measured also. The recording speed of Mg:Mn:Fe:LiNbO_3 crystals is faster than that of Mn:Fe:LiNbO_3.