Optical article containing a polymer exhibiting a high level of second order polarization susceptibility
US5410630A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1993 |
| Grant date | Apr 25, 1995 |
| Priority date | — |
| Expiry date | Nov 18, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3617
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical article exhibits effects attributable to the nonlinear second order polarizability of electromagnetic radiation and comprises a polymer containing within its repeating units polar aligned noncentrosymmetric molecular dipoles having an electron donor moiety linked through a conjugated .pi. bonding system to an electron acceptor moiety to permit oscillation of the molecular dipoles between a ground state exhibiting a first dipole moment and an excited state exhibiting a different dipole moment, characterized in that the molecular dipoles include as an acceptor moiety a vinyl group geminally substituted by two strong electron withdrawing groups, at least one of which is a sulfonyl moiety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.