Surface emitting lasers with combined output
US4894833A · kind A · utility
17Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 9, 1988 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | Aug 9, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/187
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Surface emitting lasers are laterally aligned and coupled together and also have their light output signals combined. This results in greater phase and frequency coherency and narrower and reduced amplitude sidelobes. Preferably, not more than two lasers are longitudinally aligned along the same axis for still greater coherency compared with adding the light output signals of more than two longitudinally aligned lasers. The lasers can be of the DH-LOC type or of the QW type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.