Patent ID: 6903825

Claim:
A method of analyzing a scattering sample by time resolved measurement of the light scattered within this sample, characterized in that it comprises the steps of: a) illuminating the sample with a temporally coherent and wavelength-modulated incident light beam; b) producing a succession of interference signals, recorded over a time interval, by superposition of the scattered light obtained at the output of the sample and of light taken from the incident beam illuminating the sample; c) combining each interference signal with a reference signal (Ref(t,τ 0 )) generating a time gate centered on a predetermined delay (τ 0 ) in order to produce a signal characteristic of the predetermined delay (τ 0 ); d) extracting the d.c. component of each signal characteristic of the predetermined delay (τ 0 ); e) applying a nonlinear function to each of the d.c. components of the signals characteristic of the predetermined delay (τ 0 ); and f) carrying out, a linear combination of each of the nonlinear function images of the d.c. components of the signals characteristic of the predetermined delay (τ 0 ).