Saturation of Cubic Optical Nonlinearity in Long-Chain Polyene Oligomers
- 19 August 1994
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 265 (5175), 1070-1072
- https://doi.org/10.1126/science.265.5175.1070
Abstract
The scaling of the cubic nonlinearity γ with chain length in polyenic molecules has received considerable theoretical attention. Earlier experimental investigations have been restricted to oligomers with fewer than 20 double bonds because of problems associated with the synthesis and solubility of conjugated molecules. These synthetic difficulties have been overcome in the present study by the use of modern living polymerization techniques. Solution measurements of γ as a function of chain length in long-chain (up to 240 double bonds) model polyene oligomers are reported. A saturation of the increase of γ with chain length is observed, and the onset of this saturation occurs for chain lengths considerably longer than predicted from theory.Keywords
This publication has 29 references indexed in Scilit:
- Synthesis and Nonlinear Optical Analysis of Triblock Copolymers Containing Discrete PolyenesMacromolecules, 1994
- Nonlinear optical analysis of a series of triblock copolymers containing model polyenes: the dependence of hyperpolarizability on conjugation lengthJournal of the American Chemical Society, 1993
- Nonlinear optical response of conjugated polymers: Electron-hole anharmonic-oscillator picturePhysical Review Letters, 1992
- Nonlinear optical susceptibilities of many-electron systemsPhysical Review B, 1991
- Static and dynamic third-harmonic generation in long polyacetylene and polyparaphenylene vinylene chainsPhysical Review B, 1991
- Conformational disorder in conjugated polymersThe Journal of Chemical Physics, 1989
- Nonlinear ground state fluctuations (zero point motion) as the source of the nonlinear optical properties of polyacetyleneSynthetic Metals, 1989
- A systematic study of polarizability and microscopic third-order optical nonlinearity in thiophene oligomersThe Journal of Chemical Physics, 1988
- Nonlinear susceptibilities of finite conjugated organic polymersThe Journal of Physical Chemistry, 1987
- Third-order optical polarizability of conjugated organic moleculesOptics Communications, 1974