Laser source with coherent beam recombination
US7852888B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2006 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Jan 14, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/067
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser source is disclosed with coherent recombination of N spatial monomode laser beams having N phase shifters controlled by a phase-lock device (3). The phase-lock device has an optical device (30) capable of taking at least a portion of each of the N beams. The optical device has an optical element (32) capable of applying a phase deformation, and at least one matrix (M1) of detectors capable of detecting a first image (im) of a wave surface corresponding to the N beams. The matrix (M1) of detectors also detects a second image (imd) deformed by the optical element (32). Processing means (31) are provided for processing the first and second images. The processing means are configured so as to measure the phase pistons between on the sub-pupils (spj) corresponding to the N beams and to apply phase corrections c(φ) to each of the N beams, by means of said N phase shifters so as to minimize the phase pistons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.