Periodically poled element having a suppressing structure for the domain spreading
US7515794B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2007 |
| Grant date | Apr 7, 2009 |
| Priority date | — |
| Expiry date | Dec 16, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/124
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A periodically poled element comprises a ferroelectric substrate having a top surface, a bottom surface, a top electrode structure including at least one conductor positioned on the top surface, and a suppressing structure including at least one insulator positioned on the top surface and a gap separating the insulator from the conductor. The ferroelectric substrate has a predetermined polarization direction, the conductor is configured to form an inverted domain with an inverted polarization direction in the ferroelectric substrate as a predetermined voltage is applied during a poling process, and the suppressing structure is configured to suppress the spreading of the inverted domain during the poling process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.