Laser with grating feedback unstable resonator
US4803696A · kind A · utility
58Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1987 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Jun 30, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/1089
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser is disclosed which uses a curved spatial grating in either its reflective or output regions, or both, or distributed throughout the laser resonator, to produce an unstable optical reflection pattern which fills the resonating cavity more efficiently than in prior devices. Various combinations of different grating curvatures are disclosed. The invention is particularly adapted to semiconductor lasers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.