title: Secondary photorefractive centers in Sn2P2S6:Sb crystals.
abstract: Secondary photorefractive centers in Sb-doped Sn2P2S6 have a lifetime comparable to the formation time of the space-charge grating. This considerably affects the dynamics of two-beam coupling and results in a new type of transient gain enhancement for preilluminated samples.
authors.affiliation: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright–Patterson Air Force Base, Ohio 45433, USA.
authors.forename: Dean R
authors.initials: DR
authors.lastname: Evans
authors.forename: Alexandr
authors.initials: A
authors.lastname: Shuymelyuk
authors.forename: Gary
authors.initials: G
authors.lastname: Cook
authors.forename: Serguey
authors.initials: S
authors.lastname: Odoulov