Patent ID: 7903260

Claim:
A metrology system comprising: a narrowband beam generation system for directing a narrowband probe beam at a measurement pattern on a test sample; a first spectrometer and detector combination; a set of output optics for directing inelastically scattered light from the measurement pattern in response to the narrowband probe beam onto the first spectrometer and detector combination; a second spectrometer and detector combination for measuring elastically scattered light from the measurement pattern; and a computing system including: inelastic scatterometry logic for performing an iterative operation to determine a material property distribution across the measurement pattern, the iterative operation using the inelastically scattered data measured by the first spectrometer and detector combination; logic for generating dimensional information for the measurement pattern by performing a scatterometry analysis on elastically scattered light data for the measurement pattern measured by the second spectrometer and detector combination; and logic for generating a mathematical model using the dimensional information.