title: Surface waves in two-photon photorefractive media.
abstract: We present the evolution equation of surface waves due to the two-photon photorefractive effect. It is shown theoretically that the surface waves can be supported by two-photon photorefractive media. The spatial frequency of photorefractive surface waves can be changed by an applied external electric field, which indicates a method for transforming the surface waves between high-frequency modes and low-frequency modes.
authors.affiliation: Photonics Research Center, Ministry of Education Key Lab of Weak-Light Nonlinear Photonics Materials, and Tianjin Key Lab of Photonics Materials and Technology for Information Science, Nankai University, Tianjin 300071, China.
authors.forename: Xiangkui
authors.initials: X
authors.lastname: Ren
authors.forename: Tianhao
authors.initials: T
authors.lastname: Zhang
authors.forename: Huihui
authors.initials: H
authors.lastname: Ma
authors.forename: Weiwei
authors.initials: W
authors.lastname: Shao
authors.forename: Jingjun
authors.initials: J
authors.lastname: Xu
authors.forename: Jianguo
authors.initials: J
authors.lastname: Tian