Systems and methods using multi-wavelength single-pulse Raman spectroscopy
US10078013B2 · kind B2 · utility
1Cited by
1References
17Claims
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Key dates
| Filing date | Oct 2, 2017 |
| Grant date | Sep 18, 2018 |
| Priority date | — |
| Expiry date | Oct 2, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4215
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides methods and apparatus comprising a multi-wavelength laser source that uses a single unfocused pulse of a low intensity but high power laser over a large sample area to collect Raman scattered collimated light, which is then Rayleigh filtered and focused using a singlet lens into a stacked fiber bundle connected to a customized spectrograph, which separates the individual spectra from the scattered wavelengths using a hybrid diffraction grating for collection onto spectra-specific sections of an array photodetector to measure spectral intensity and thereby identify one or more compounds in the sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.