Device for generating or amplifying coherent electromagnetic radiation, and method of manufacturing the device
US4359776A · kind A · utility
17Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1979 |
| Grant date | Nov 16, 1982 |
| Priority date | — |
| Expiry date | Jun 18, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/2231
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A semiconductor laser/amplifier is disclosed in which the radiation oscillates only in one longitudinal mode. According to the invention this is achieved by a strip-shaped active region which exhibits periodic variations in amplification (and preferably also in the amplification profile) in its longitudinal direction over at least a part of its length. The period of the amplification variation is at least ten times the wavelength of the radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.