Nonlinear optical properties of in situ corona poled polymers
Manfred Eich, B. Reck, et al.
QELS 1989
Real-time monitoring of the corona-poling process that is used to create a bulk second-order nonlinear-optical susceptibility was accomplished by observing electrochromic shifts and intensity decreases of charge-transfer absorption bands in both dye-doped and covalently functionalized polymer films. By measuring small changes in the refractive-index anisotropy, the optical waveguiding technique was demonstrated to be a sensitive measure of the poling-induced order and its relaxation. The guest-host systems were formed from the dyes NN-dimethylaminonitrostilbene, NN-dimethylindoaniline (Phenol Blue), and 4-(N-(2-hydroxyethyl)- N-ethyl)-amino-4’-nitroazobenzene (Disperse Red 1), each dissolved in a poly(methyl methacrylate) matrix. The covalently functionalized polymers contained pendant para-nitroaniline (PNA) moieties. The first, poly(N-(4-nitrophenyl)allylamine), was formed from a poly(allylamine) derivative and is called PPNA. The second was based on poly(hydroxystyrene), with PNA attachment occurring between the phenol group and the PNA hydroxyethyl group; this polymer is named PHS-MENA. The final polymer is a linear epoxy (bisphenol A) with the PNA amino N atoms forming a link in the main chain; it is called Bis A-NA. A sample calculation demonstrated the use of experimental electrochromic spectral data to estimate the electro-optic coefficients. © 1990 Optical Society of America.
Manfred Eich, B. Reck, et al.
QELS 1989
G.W. Burr, H. Coufal, et al.
SPIE Optical Science and Technology 2000
D. Jungbauer, B. Reck, et al.
Applied Physics Letters
J.D. Swalen, G.C. Bjorklund, et al.
Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics