Multi-beam combining apparatus
US9325149B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 17, 2013 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Jan 17, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/2383
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multi-beam combining apparatus includes a phase shifting section, a superposing section, an observing section and a phase control section. The phase shifting section generates a plurality of phase-shifted laser beams by shifting the phase of each of the plurality of laser beams. The superposing section generates a plurality of superposed laser beam by superposing the reference laser beam and each of the plurality of phase-shifted laser beams. The observing section generates interference pattern data of a spatial interference pattern which appears when observing each of the superposed laser beams. The phase control section carries out a feedback control of the phase shifts in the phase shifting section based on the interference pattern data obtained for every superposed laser beam, and thereby sets the plurality of phase-shifted laser beams to desired states.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.