(Multi-) heterodyne detection spectrometer setup
US11287319B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 15, 2018 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | Aug 19, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B9/02007
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A heterodyne detection spectrometer setup comprises an optical path with at least a first cavity able to emit a first laser beam; a second cavity able to emit a second laser beam; and at least one combining and/or reflecting element. The cavities are connected to current drivers for stimulating laser emission, which shows increased signal-to-noise ratios of the heterodyne signal and an increased dynamic range. This can be reached if at least the second cavity comprises an active medium connected to a heterodyne signal extraction element and a (multi-) heterodyne signal processing unit, which is simultaneously usable for laser light generation and as detector element, comprising an active medium introduced in the optical path in order that the first and/or second laser beam can enter the respective other cavity. At least one reference path is established between the two cavities in the optical path with at least two combining and/or reflecting elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.