Subcentimeter radiation detection and frequency domain spectroscopy
US7291839B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2005 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Nov 10, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/3504
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system, method and detection arrangement for investigation of a sample are described. A laser illumination arrangement generates (i) a source laser energy that is incident on a source to cause emission of subcentimeter radiation, at least a portion of which interacts with the sample to serve as a sample influenced radiation incident on a detector and (ii) a detector laser energy that is incident on the detector to produce an optical component of the detector laser energy offset with respect to a corresponding optical component of the source laser energy so that the collective energy at the detector generates an electrical output signal responsive to the sample influenced radiation. In another aspect, a detection arrangement is used with at least two continuous wave lasers for causing the detector body to respond in a way which produces a frequency down-converted signal from an incident electromagnetic radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.