WVASE® is the most powerful and comprehensive ellipsometric analysis program available. It provides more modeling options than any other program. WVASE® is also FAST. It employs state of the art mathematical fitting algorithms for the fastest, most accurate, fits to your data. In addition to modeling and analyzing the ellipsometric data, WVASE® also analyzes and/or simulates reflectance and transmission data (Neutron reflectivity data, also, for analysis of very thin films such as organics).