title: Photorefractive properties of Cu-doped KNSBN crystal with fluorine replacing oxygen.
abstract: We report the photorefractive properties of a new kind of Cu-doped KNSBN crystal in which a small fraction of oxygen (O) atoms are replaced with fluorine (F) atoms. The replacement of oxygen with fluorine in Cu:KNSBN crystals leads to a much shorter response time of 30 ms at an incident intensity of 5 W/cm(2). We also discuss the effect of electron-hole competition on the coupling constant.
authors: X
authors: X
authors: Shen
authors: J
authors: J
authors: Zhao
authors: R
authors: R
authors: Wang
authors: P
authors: P
authors: Yeh
authors: S
authors: S
authors: Zhang
authors: H
authors: H
authors: Chen