Patent Document ID: 20140019097
Application ID: 13935275
Patent Flag: 0

Claim One:
1. A model building and analysis engine comprising: a geometric model building module configured to generate a geometric model of a structure of a specimen; an optical response function building module configured to generate an optical response model of a response of the structure of the specimen to incident optical radiation based at least in part on the geometric model; an x-ray response function building module configured to generate an x-ray response model of a response of the structure of the specimen to incident x-ray radiation based at least in part on the geometric model, wherein both the optical response model and the x-ray response model include at least one common geometric parameter from the geometric model; and a fitting analysis module configured to: receive a first amount of measurement data indicative of an amount of optical radiation detected from the specimen in response to an optical illumination beam incident on the specimen; receive a second amount of measurement data indicative of an amount of x-ray radiation detected from the specimen in response to an x-ray illumination beam incident on the specimen; determine at least one specimen parameter value based on a fitting of the optical response model with the first amount of measurement data and a fitting of the x-ray response model to the second amount of measurement data; and output the at least one specimen parameter value for storage in a memory.