Folded cavity injection laser
US3996528A · kind A · utility
12Cited by
0References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1975 |
| Grant date | Dec 7, 1976 |
| Priority date | — |
| Expiry date | Dec 31, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An injection laser, which is chemically etched to provide mirror-like surfaces, also is provided with a chirped diffraction grating. The latter grating, which is etched in the injection laser, combines with the chemically etched sides to provide laser emission in a direction substantially parallel to the current flowing through the laser. As an alternative to the chirped diffraction grating, waveguides are included in the resulting folded cavity laser. Either of the above structures relaxes the fabrication tolerance in the inclined surfaces etched in the laser relative to known folded cavity lasing structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.