title: Organic electro-optic thin films by simultaneous vacuum deposition and laser-assisted poling.
abstract: Organic materials with a high second-order optical nonlinearity have an important application for the next generation of computing, telecommunications, and other industries. Because of a high electro-optic coefficient and low dielectric constant, N-benzyl-2-methyl-4-nitroaniline (BNA) single crystals have been grown and their optical properties have been extensively studied. In this Letter, a poled BNA thin film material was prepared through simultaneous vacuum evaporation and laser-assisted electrical poling. The linear electro-optic coefficients of BNA were measured by a Young's two-slit interference electro-optic measurement method. The dependence of the resulting electro-optic properties on optical power was explored. Enhancement induced by laser illumination was demonstrated. The BNA thin film can exhibit an r(33) value comparable to that of BNA single crystals.
authors.affiliation: Applied Physics Laboratory, University of Washington, Seattle, Washington 98105, USA.
authors.forename: Zhaohong
authors.initials: Z
authors.lastname: Wang
authors.forename: Weiwei
authors.initials: W
authors.lastname: Sun
authors.forename: Antao
authors.initials: A
authors.lastname: Chen
authors.forename: Ilya
authors.initials: I
authors.lastname: Kosilkin
authors.forename: Denise
authors.initials: D
authors.lastname: Bale
authors.forename: Larry R
authors.initials: LR
authors.lastname: Dalton