Patent ID: 7307726
Filing Date: 2007-12-11
Classification: G01B,G01N

Abstract:
1. A method for ellipsometric measurement of a sample with spatial resolution under polarising microscope forming a picture of the sample, wherein: the sample is irradiated by an illuminating beam linearly polarised via an aperture diaphragm, the light reflected by the sample is analysed by a polarizer/analyser, characterised by the relative orientation φ of its polarisation direction relative to that of the polarizer, the intensity reflected is modulated by the relative rotation of the polarisation of the illuminating beam and of the polarizer-analyser, characterised in that: the aperture diaphragm of the illuminating beam is a ring centred on the axis of the beam delineating a single angle of incidence, the average reflected flux φ the measurements φ the measurements φ