Unipolar multiple-wavelength laser
US6091751A · kind A · utility
9Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1998 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Feb 25, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/4087
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A unipolar multiple-wavelength quantum well laser comprises at least two stacks of layers of semiconductor materials. Each stack forms a quantum well laser working by intra-band transition and emitting a specified wavelength. The two stacks of layers are separated by a stack of layers of semiconductor materials constituting a quantum well transfer lattice which, under an electrical field, enables a transfer of electrons from the low level of the (conduction or valence) band of a quantum well of a first laser to the high level of the (conduction or valence) band of the quantum well of a second laser. FIG. 2b.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.