Optical element
US11347086B2 · kind B2 · utility
0Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2019 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Feb 27, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/21
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
To provide an optical element in which an electrode is directly formed on an LN substrate, and a drift phenomenon is suppressed. In an optical element including: a substrate made of lithium niobate crystals; and an electrode disposed on the substrate, the substrate and the electrode are in direct contact with each other, and as a contact metal disposed on a surface of the electrode where the electrode is in contact with the substrate, a metal material whose standard enthalpy of formation per coordinate bond upon oxidation is greater than a standard enthalpy of formation per coordinate bond of niobium pentoxide is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.