title: Electro-optic effect in crystalline films of transverse planar octupolar symmetry.
abstract: We present theoretical and experimental demonstrations of the electro-optic activity in crystalline molecular thin films with octupolar D(3h) symmetry. Applying a longitudinal electric field modulation within the molecular plane, we analyze the induced refractive index change relative to the orientation of the octupoles in their plane, and show that a maximum value is reached when one octupolar branch lies along the direction of the modulating field. These characteristics, as well as their electric field dependence, are drastically different from more traditional one-dimensional symmetry samples, bringing additional advantages related to electro-optic coupling possibilities.
authors.affiliation: Department of Physics, Gyeongsang National University, Jinju, South Korea. jmy97@gnu.ac.kr
authors.forename: Mi-Yun
authors.initials: MY
authors.lastname: Jeong
authors.forename: Sophie
authors.initials: S
authors.lastname: Brasselet
authors.forename: Bong Rae
authors.initials: BR
authors.lastname: Cho
authors.forename: Tong-Kun
authors.initials: TK
authors.lastname: Lim
mesh_terms: D004574:Electromagnetic Fields; D050866:Liquid Crystals / Q000737:chemistry* / Q000528:radiation effects*; D008422:Materials Testing; D008567:Membranes, Artificial; D012031:Refractometry / Q000379:methods*
chemical_list: D008567:Membranes, Artificial