Patent ID: 6088100
Filing Date: 2000-07-11
Classification: G01J,G01N

Abstract:
An absorption imaging spectrometer for providing a three-dimensional absorption spectral image of a light-transmitting sample, the spectrometer comprising:(a) a source of temporally incoherent light;(b) an interference medium sensitive to the temporally incoherent light, the interference medium having an input;(c) a beam splitter for dividing the temporally incoherent light into a measurement beam along a measurement path incident on the sample and a reference beam along a reference path;(d) an optical configuration for modulating a time delay of the reference beam;(e) an optical combining means for supplying the reference beam and a reflected component of the measurement beam to the input of the interference medium;(f) a signal processor coupled to the interference medium for producing an interferogram as a function of the time delay of the reference beam;(g) a controller for calculating the three-dimensional absorption spectral image of a sample on the basis of the interferogram.