Non-linear optics
US4992203A · kind A · utility
1Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1989 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Oct 13, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/065
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Optical elements having non-linear optical properties comprising a compound of the formula: ##STR1## wherein D is an electron donor PA0 A is an electron acceptor; and W, X, Y and Z are each independently H or any group capable of attachment to the pyrazolyl ring; in which the molecules of the compound are aligned so that the element has a net non-centrosymmetry, a method for their preparation, optical devices comprising such elements, and compounds of formula I.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.