Device which measures the mutual coherence function of a laser beam
US4265539A · kind A · utility
7Cited by
2References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1979 |
| Grant date | May 5, 1981 |
| Priority date | — |
| Expiry date | Jun 7, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2009/0211
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device which measures the mutual coherence function of a laser beam. The device includes: a screen 1 in which openings 3 to 11 are disposed on the path of the beam 2 and allow pencils of light 19, 29 and 34 to pass; an interferometer constituted by an optical plate 13, a dihedron 14 and a mirror 21; a phase modulator 22 disposed on a branch of the interferometer; receivers 23 to 27 which receive the pencils of light 20 and 33 which emerge from the interferometer; and a processing circuit 36. Application to the analysis of a laser beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.