Second-Order Nonlinear Optical Effects in Novel Side-Chain Liquid Crystalline Polymers and Monomers Under Bias of an Applied DC Electric Field
Document Type
Article
Publication Date
10-1-1992
Department
Chemistry and Biochemistry
School
Mathematics and Natural Sciences
Abstract
Second-order nonlinear optical susceptibilities of a series of newly synthesized liquid crystalline polymers and corresponding monomers were measured by using second-harmonic generation. A substituted stilbene moiety was selected as the main conjugated π-electronic structure, and systematic modifications were made at the site of the donor and in the conjugation path to compare the roles of various donors and charge-transferring linkages in the second-harmonic-generation process. The β values extracted from the measurements made on solutions and on thin films yielded similar values for the monomers and the corresponding polymers. The variations in β values are discussed in terms of molecular structural properties, charge-transferring power of the donors, and dispersion effect.
Publication Title
Journal of the Optical Society of America B: Optical Physics
Volume
9
Issue
10
First Page
1832
Last Page
1842
Recommended Citation
Wijekoon, W.,
Zhang, Y.,
Karna, S.,
Prasad, P.,
Griffin, A.,
Bhatti, A.
(1992). Second-Order Nonlinear Optical Effects in Novel Side-Chain Liquid Crystalline Polymers and Monomers Under Bias of an Applied DC Electric Field. Journal of the Optical Society of America B: Optical Physics, 9(10), 1832-1842.
Available at: https://aquila.usm.edu/fac_pubs/6883