Optical device including three-coupled quantum well structure
US9841617B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 22, 2014 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Oct 23, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/755
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device includes an active layer that includes at least two outer barriers and at least one coupled quantum well that is inserted between the at least two outer barriers. Each coupled quantum well includes at least three quantum well layers and at least two coupling barriers that are respectively provided between the at least three quantum well layers. Thicknesses of two quantum well layers disposed at opposite end portions of the at least three quantum well layers are less than a thickness of the other quantum well layer disposed between the two quantum well layers disposed at the opposite end portions. A bandgap of the two quantum well layers disposed at the opposite end portions may be higher than a bandgap of the other quantum well layer disposed between the two quantum well layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.