Optical imaging of mineral species using hyperspectral modulation transfer techniques
US10948410B2 · kind B2 · utility
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Key dates
| Filing date | Nov 23, 2017 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Nov 26, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/655
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of imaging a sample containing a target mineral species is provided. The method includes probing the sample with a pump beam and a Stokes beam having a tunable frequency difference, and detecting an optical response of the sample resulting from a transfer of said modulation between the pump beam and the Stokes beam. The probing is scanned spatially and spectrally, thereby obtaining hyperspectral data. Correlation with a known Raman resonance of the mineral species and with anon Raman-resonant contribution to said optical response allows building an image of the sample mapping different species within the sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.