Distributed feedback filter and laser
US4161702A · kind A · utility
1Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1977 |
| Grant date | Jul 17, 1979 |
| Priority date | — |
| Expiry date | Sep 28, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/3222
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A distributed feedback optical device using a single crystal boule prepared with periodic spatial striations of ternary Pb.sub.1-x Sn.sub.x Te and Yb impurity atoms forming a layered array of planar p-n junctions normal to the axis of light emission. Crystal surfaces parallel to the axis are coated with a reflective, electrical insulator. Free scattering losses are minimized by applying a magnetic field along the longitudinal axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.