Velocity measurement device and laser range finder using a coherent detection
US6100516A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1999 |
| Grant date | Aug 8, 2000 |
| Priority date | — |
| Expiry date | Jul 15, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a velocity measurement device of the coherent detection type comprising: PA1 an active laser medium (10), PA1 an input mirror (M.sub.1) and a first output mirror (M.sub.3) defining, with the laser medium, a first resonant cavity of quality factor Q.sub.max making it possible to emit a laser beam (4), PA1 a second output mirror (M.sub.2) defining, with the active laser medium (10) and the input mirror (M.sub.1), a second resonant cavity of quality factor Q.sub.min (<Q.sub.max), making it possible to amplify a measuring signal from a target which has intercepted the laser beam (4) emitted with the aid of the first resonant cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.