Quantum-dot cascade laser
US5963571A · kind A · utility
18Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1997 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Jun 30, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/951
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A quantum-dot cascade laser which eliminates undesirable single phonon decays associated with quantum-well devices. The elimination of single phonon decays is realized by a three-dimensional confinement resulting in a several-order-of-magnitude reduction in the threshold current. Vertical radiative transitions are employed within single quantum dots contained by Bragg reflectors. Dot size, dot density and dot uniformity requirements are presented along with several embodiments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.