Stimulated raman nanospectroscopy
US9046492B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 3, 2012 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Mar 6, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for achieving measurable sample heating in the vicinity of a probe microscope tip using Stimulated Raman Spectroscopy. Two laser sources, preferably in the UV visible or near IR illuminate the sample, preferably in overlapping diffraction limited spots. At least one of the sources is swept through a frequency range such that the difference frequency corresponds to IR spectral regions of interest. Selective Absorption by differing sample materials at the difference frequency causes measurable sample heating detectable by the probe tip related to IR spectral absorption bands. Thus very high spatial resolution IR spectroscopy may be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.