Patent ID: 8746886

Claim:
A method of characterizing an electromagnetic field that is propagated from a first surface to a second surface, comprising: determining a first surface characterization of the electromagnetic field corresponding to the first surface, the first surface characterization comprising a first surface field strength; determining a propagation distance between the first surface and a second surface; and determining a second surface characterization of the electromagnetic field based on the first surface characterization and the propagation distance, the second surface characterization comprising a second surface field strength, wherein the first surface field strength of the electromagnetic field comprises a first surface modulus and a first surface field phase, wherein the second surface field strength of the electromagnetic field comprises a second surface modulus and a second surface field phase, and wherein using a computer processor, the determined first surface characterization of the electromagnetic field, the determined propagation distance, and the determined second surface characterization of the electromagnetic field are used to characterize the electromagnetic field that is propagated from the first surface to the second surface.