title: Surface waves in photorefractive polymer films.
abstract: We observed the temporal development of surface waves and investigated their power propagation loss in typical photorefractive polymer films sandwiched between ITO glass substrates. We found that amplified scattered waves generated in a pumped region started to develop into surface waves from a point where they reached the substrate through the self-bending effect. The surface waves propagated over a distance of 1.7 mm, thereby confining the power to a region at a distance of 30 microns from the substrate. Considerable propagation power loss of the surface waves was observed at a low pumping power of the beam; however, the power loss decreased considerably when the beam had high power.
authors: Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan.
authors: Takashi
authors: T
authors: Fujihara
authors: Takafumi
authors: T
authors: Sassa
authors: Tsuyoshi
authors: T
authors: Muto
authors: Shinsuke
authors: S
authors: Umegaki
authors: Tatsuo
authors: T
authors: Wada
mesh_terms: D008027:Light; D008422:Materials Testing; D008567:Membranes, Artificial; D011108:Polymers / Q000737:chemistry*; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation; D013499:Surface Properties
chemical_list: D008567:Membranes, Artificial; D011108:Polymers