Measurement apparatus and measurement method
US9594023B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 2012 |
| Grant date | Mar 14, 2017 |
| Priority date | — |
| Expiry date | Nov 3, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/067
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
There is provided a measurement apparatus including a light source unit configured to emit pulsed laser light used for pump light and Stokes light that excite predetermined molecular vibration of a measurement sample and for probe light that is intensity-modulated with a predetermined reference frequency and that has a same wavelength as the pump light or the Stokes light, a pulse control unit configured to cause time delay of the probe light generated by the light source unit and then to guide the pump light, the Stokes light, and the time-delayed probe light to the measurement sample, and a detection unit configured to detect transmitted light transmitted through the measurement sample or reflected light from the measurement sample. A relaxation time of the molecular vibration of the measurement sample is measured using time-resolved stimulated Raman gain spectroscopic measurement or time-resolved stimulated Raman loss spectroscopic measurement of the measurement sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.