LIDAR for heterodyne detection by a local oscillator and a dual probing beam, at one or several simultaneous frequency(ies), and LIDAR detection method by dual heterodyning detection
US11585927B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 19, 2019 |
| Grant date | Feb 21, 2023 |
| Priority date | — |
| Expiry date | Dec 12, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A90/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A LIDAR-type device for a remote spectroscopy of a matter includes an optical emission channel that includes a laser source and an optical waves frequency generator to generate a first comb, a second comb, and a local comb. Each comb includes at least one stripe. A transmit telescope emits an emission signal. A reception channel includes a receive telescope that receives a signal reflected by the matter traversed by the emission signal and a detection system that detects a first beat signal of the at least one stripe of the local comb with the corresponding first stripe of the first reflected comb, a second beat signal of the at least one stripe of the local comb with the corresponding second stripe of the second reflected comb, and a third beat signal of the at least one first beat signal with the at least one second beat signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.