Detection of a Raman spectrum, using monochromatic excitation light varied over a frequency range with the resulting scattered light measured using a bandpass filter whose width is equal to the mid-height Raman beam width

摘要

Method has the following steps: variation with time of the exciting light beam between lower and upper frequency values. Measurements of the scattered light are made during the variation. The scattered light is measured using a band-pass filter, the width of which is at least equal to the width of the Raman beam at mid-height. An Independent claim is made for a device for determining the Raman spectrum of an object using monochromatic incident light and a band pass filter.