Patent ID: 7456399

Claim:
A method of calibrating multiple metrology systems to one another comprising: obtaining a first set of spectral data measured for a first sample film measured by a first photoelectron spectroscopy system; using a selected function to extract intensities for one or more elemental species associated with said first sample film to provide a first set of extracted intensities; determining a first quantitative characteristic associated with said first sample film using said first set of extracted intensities; obtaining a second set of spectral data measured for a comparable sample film measured by a second photoelectron spectroscopy system, said comparable sample film being one of said first sample film or another film that can be compared to said first sample film; using said selected function and continually adjusting said selected function to extract intensities for said one or more elemental species associated with said comparable sample film to provide a second set of corrected-extracted intensities; and determining a second quantitative characteristic for said comparable sample, said second quantitative characteristic being of same type to said first quantitative characteristic, and wherein said selected function is continually adjusted until said determined second quantitative characteristic closely or substantially matches said first quantitative characteristic.