Distributed-feedback semiconductor laser device
US4665528A · kind A · utility
21Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1984 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Dec 14, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/1215
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a distributed feedback semiconductor laser provided with a grating which effects optical feedback by means of periodic corrugation disposed inside an optical resonator. The optical resonator has at least two regions having different bragg wavelength, and these regions are arranged longitudinally in the direction of an optical axis. The laser device can realize stable single longitudinal mode oscillation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.