VCSEL having polarization control and method of making same
US5995531A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1997 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Nov 4, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/2063
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A vertical cavity surface emitting laser with polarization control includes a first stack of distributed Bragg reflectors positioned on a substrate with an active region including a first cladding region and a second cladding region positioned on opposite sides of an active area overlying the first stack of distributed Bragg reflectors A second stack of distributed Bragg reflectors is positioned on the active region. The second stack has an ion implantation region formed to control and define a lasing threshold of the laser. The second stack further is formed into a ridge with the ridge being etched into the ion implantation region to form an elongated shape so as to polarize light emitted by the second stack of distributed Bragg reflectors
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.