Method and apparatus for control of phase conjugation cells
US4794605A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1986 |
| Grant date | Dec 27, 1988 |
| Priority date | — |
| Expiry date | Mar 13, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/2383
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A technique in which one or more phase conjugation cells, such as stimulated Brillouin scattering cells, are controlled by use of a seed beam injected into the cells. When a laser beam is focused into a phase conjugation cell, a reflected phase conjugated beam is produced. The seed beam is injected at the same frequency and in the same direction as the expected phase conjugated beam, and is adjusted to control the phase and other characteristics of the phase conjugated beam. In multiple cell arrays, seed beams are employed to ensure phase coherency of multiple beams. For lower energy applications, use of the seed beam allows a phase conjugation cell to be operated with incident beams of lower energy than would be needed without the seed beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.