Terahertz spectroscopy and imaging in dynamic environments with spectral response enhancements
US11099072B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2019 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Aug 8, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/425
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Embodiments are disclosed for terahertz spectroscopy and imaging in dynamic environments. In an embodiment, a method comprises emitting a continuous electromagnetic (EM) wave in a terahertz (THz) frequency band into a dynamic environment. The EM THz wave is reflected off an object in the environment. A spectral response of a received signal indicative of the reflected EM wave is determined that includes absorption spectra at a frequency in the THz frequency band. The absorption spectra is indicative of a transmission medium in the environment. The spectral response of the received signal is compensated for fixed and frequency-specific losses. The compensated absorption spectra is compared with known absorption spectra of target transmission mediums. Based on results of the comparing, a particular target transmission medium is identified as being the transmission medium in the environment. The absorption spectra loss is used to determine a concentration level of the target transmission medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.