Method for preparing a poled structure with inhibition blocks
US7474458B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2007 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Sep 21, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3548
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for preparing a poled structure comprises the steps of forming a ferroelectric substrate having a top surface and a bottom surface, performing a doping process to form at least one inhibition block in the ferroelectric substrate, forming an electrode structure including a first electrode and a second electrode on the top surface and a third electrode on the bottom surface and applying a predetermined voltage to the electrode structure to form a plurality of inverted domains outside of the inhibition block in the ferroelectric substrate. The ferroelectric substrate has a first polarization direction and a first crystal structure, the inhibition block has a second crystal structure different from the first crystal structure, and the inverted domains have a second polarization direction substantially opposite to the first polarization direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.