Patent ID: 7859661

Claim:
A polarimetric Raman system for analysing a sample ( 4 ) comprising: an excitation source ( 1 ) emitting an incident light beam ( 2 ), said excitation source ( 1 ) being configured for producing a Raman scattered light having an intensity, a sample holder ( 3 ), on which the sample ( 4 ) can be mounted, means for focusing the incident light beam ( 2 ) onto the sample surface ( 16 ) to generate the Raman scattered light, means for collecting the Raman scattered light and filtering it from Rayleigh scattered light to form a Raman scattered light beam ( 5 ), a detection system ( 6 ) measuring intensity of the Raman scattered light beam ( 5 ) as a function of time, and at least a polarization state generator (PSG) ( 7 ) able to produce four independent polarization states or a polarization state analyser (PSA) ( 8 ) able to analyse four independent polarization states in order to detect the intensity of the Raman scattered light beam ( 5 ) making it possible to calculate a partial or complete Mueller-Stoke matrix of the sample ( 4 ), the incident light beam ( 2 ) passing through said PSG ( 7 ) before being scattered by the sample ( 4 ) and the Raman scattered light beam ( 5 ) passing through said PSA ( 8 ) after being scattered by the sample ( 4 ).