Sterically stabilized polyene-bridged second-order nonlinear optical chromophores and devices incorporating the same
US6348992B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2000 |
| Grant date | Feb 19, 2002 |
| Priority date | — |
| Expiry date | Apr 18, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/212
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Sterically stabilized polyene-bridged second-order nonlinear chromophores and devices incorporating the same are embodied in a variety of chromophore materials, and particularly in chromophore materials are configured within an oxygen-free operating environment. An exemplary preferred chromophore includes an electron donor group, an electron acceptor group and a &pgr;-conjugate bridge structure therebetween. The bridge is a polyene structure having a five-, six- or seven-membered ring to lock one carbon-carbon double bond. The bridge contains an unlocked conjugate diene unit which connects the bridge ring and the acceptor. Another exemplary preferred chromophore includes an electron donor group, an electron acceptor group and a ring-locked bridge structure between the electron donor group and the electron acceptor group. The bridge structure includes a fused double-or triple-ring structure which functions to lock two or three double bonds. The bridge also contains an unlocked conjugate diene unit to connect the the bridge ring and the acceptor. Another exemplary preferred chromophore includes an electron donor group, an acceptor, and a bridge structure therebetween, wherein the acc…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.