Tunable laser fluid sensor
US7145165B2 · kind B2 · utility
25Cited by
38References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2004 |
| Grant date | Dec 5, 2006 |
| Priority date | — |
| Expiry date | Nov 10, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/055
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensitive fluid sensor for detecting fluids and particularly trace fluids. The sensor may be adjustable for detecting fluids of various absorption lines. To effect such adjustment, a tunable laser may be used. The laser may be an edge emitting diode, a VCSEL or other tunable source. The detection apparatus of the sensor may incorporate a sample cell through which a laser light may go through. The sample cell may comprise a tunable ring-down cavity. The ring-down cavity may be a ring laser cavity like that of a ring laser gyroscope. There may be a photo detector proximate to the ring down cavity connected to a processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.