Multi-excitation raman spectroscopy method and apparatus

Abstract

There is provided a method of identifying one or more substances in a sample by: illuminating the sample with light of each of a plurality of different excitation modes; measuring an intensity and/or polarisation of light from the sample at a plurality of wavelengths to obtain a measured spectrum for each of the excitation modes; and identifying one or more substances in the sample using the measured spectra together, wherein: the excitation modes differ in one or both of wavelength and polarisation; and the identifying of the one or more substances uses contributions to the measured spectra from a plurality of photophysical processes in the sample including inelastic scattering of light. An apparatus suitable for carrying out the method is also provided.

Dependencies are inferred from the claim text.