Faceted magneto-optical garnet layer and light modulator using the same
US4728178A · kind A · utility
20Cited by
23References
8Claims
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Key dates
| Filing date | Feb 20, 1986 |
| Grant date | Mar 1, 1988 |
| Priority date | — |
| Expiry date | Feb 20, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/90
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magneto-optical element comprises a magnetic garnet layer on a crystalline substrate. The garnet layer has a faceted structure, which provides high Faraday rotation and controlled coercivity. The faceted structure is preferably formed by depositing the layer onto a substrate whose lattice constant is sufficiently smaller than that of the layer. The resulting elements find application in light modulators, such as switches and displays, where they permit high resolution without having to be cut into an array of small cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.