| 摘要 |
A device and method for obtaining a Raman scattering spectrum, the device comprising: an excitation light source (1) generating an excitation light beam (2); an excitation light optical path (3), used for guiding the excitation light beam to a sample to be analysed (4) so as to generate Raman scattered light (5); a scattered light collection optical path (6) collecting the Raman scattered light (5); a detection device (8), used for receiving a Raman scattered light signal corresponding to each detection frequency or sub-band and converting the signal into an electrical signal for analysis; one or a plurality of dispersion devices connected to the scattered light collection optical path and the detection device, the dispersion devices being used for guiding the Raman scattered light collected by the scattered light collection optical path to form a Raman scattering spectrum. At least one dispersion device is provided with a spatial light modulator. The spatial light modulator selects spatial portions within the Raman scattering spectrum formed in the dispersion device in which the spatial light modulator is located, the spatial portions corresponding to different detection frequencies or sub-bands, and successively guides the spatial portions to the detection device for detection. Part or all of the Raman scattering spectrum is an anti-Stokes spectrum. The present device detects an anti-Stokes Raman spectrum and is used for quantitative analysis of sample components. |
