Optically non-linear active waveguiding material comprising donor and acceptor groups-containing triphenylcarbinols
US5486559A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1994 |
| Grant date | Jan 23, 1996 |
| Priority date | — |
| Expiry date | Aug 11, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3615
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to an optically non-linear active waveguiding material comprising an optically transparent polymer and a donor group and acceptor group-containing triphenylcarbinol as a dopant. Said dopants have a high hyperpolarizability and have a charge-transfer absorption band which is about the same as that of their corresponding compounds having only one donor-.pi.-acceptor unit. The triphenylcarbinols were found to display good solubility in polymers. Nitro-functionalized triphenylcarbinols are preferred because of their charge-transfer absorption band at a low wavelength (.lambda..sub.max at about 290 nm). Aldehyde-functionalized calix(4)arenes were also found to have this low wavelength charge-transfer absorption band (.lambda..sub.max at about 270 nm). Triphenyls comprising stilbene donor-.pi.-acceptor units are preferred because of their high hyperpolarizability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.