2ND-ORDER OPTICAL NONLINEARITY OF POLYMERS INDUCED BY CHARGE INJECTION ASYMMETRY

Authors
COHEN R BERKOVIC G YITZCHAIK S KRONGAUZ V
Citation
R. Cohen et al., 2ND-ORDER OPTICAL NONLINEARITY OF POLYMERS INDUCED BY CHARGE INJECTION ASYMMETRY, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 240, 1994, pp. 169-173
Citations number
7
Categorie Soggetti
Crystallography
Journal title
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals → ACNP
ISSN journal
1058725X
Volume
240
Year of publication
1994
Pages
169 - 173
Database
ISI
SICI code
1058-725X(1994)240:<169:2ONOPI>2.0.ZU;2-Y
Abstract
A new mechanism for inducing bulk asymmetry and second order optical n onlinearity in polymer-dye systems is described. An anisotropic distri bution of charges is established inside the medium resulting from the application of high voltage via an asymmetric electrode structure. The nonlinearity induced via this mechanism is perpendicular to the exter nally applied electric field. It is proven that the nonlinearity induc ed by charge injection cannot arise from dipolar alignment of molecule s, but rather results from the nonlinearity of charged dye dimers in a bulk charge gradient.