VCSEL with separate control of current distribution and optical mode
US5317587A · kind A · utility
80Cited by
8References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1992 |
| Grant date | May 31, 1994 |
| Priority date | — |
| Expiry date | Aug 6, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/166
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A VCSEL formed on a substrate with an upper mirror stack etched to form a mesa shaped area with material positioned on the upper mirror stack including optically transparent, electrically conductive material defining an electrical contact window to control current distribution within the laser, and material positioned on the surface of the mesa shaped area with an optical thickness selected to provide a desired mirror reflectivity profile which controls the optical mode independently of the mesa edges, thereby, providing separate control of the current and the optical mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.