Triple sum frequency coherent multidimensional imaging
US9267893B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2014 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Sep 29, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/0697
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods of obtaining a multidimensional image of a sample are provided comprising (a) directing a first coherent light pulse having a first frequency ω1 and a first wave vector k1 at a first location in the sample, (b) directing a second coherent light pulse having a second frequency ω2 and a second wave vector k2 at the first location, (c) directing a third coherent light pulse having a third frequency ω3 and a third wave vector k3 at the first location and (d) detecting a coherent output signal having a fourth frequency ω4 and a fourth wave vector k4. At least two, but optionally all three, of the coherent light pulses each excite a different transition to a discrete quantum state (e.g., transitions to vibrational states or to electronic states) of a molecule or molecular functionality in the sample. Steps (a)-(d) are repeated at a sufficient number of other locations in the sample to provide the multidimensional image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.