Wavelength and polarization multiplexed vertical cavity surface emitting lasers
US6002705A · kind A · utility
62Cited by
6References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 3, 1997 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Dec 3, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/4087
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a vertical cavity surface emitting laser device comprising a plurality of semiconductor layers formed upon a substrate and capable of emitting a laser beam of a selected wavelength and a selected polarization, wherein said polarization is established by the presence of stress inducing elements disposed on said free surface of the laser device which induce a stress in the active layers of the laser device. The stress inducing elements are made of a material having a higher coefficient of thermal expansion than the material which comprises the surface layer of the laser device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.