Methods for uncorrelated evaluation of parameters in parameterized mathematical model equations for window retardence, in ellipsometer and polarimeter systems

摘要

Disclosed is a method for evaluating parameters in parameterized equations for independently calculating retardence entered to orthogonal components in a beam of electromagnetic radiation which is caused to pass through spatially separated input and output windows, by each of said input and output windows. The present invention finds application in ellipsometric investigation of sample systems present in vacuum chambers, wherein a beam of electromagnetic radiation is caused to pass through an input window, interact with a sample system, and exit through an output window, and where it is necessary to separate out the effects of said input and output windows to arrive at sample system characterizing results.