title: Analysis of reflectometers for surface anisotropy.
abstract: A succinct analysis of normal-incidence reflectometers for surface anisotropy, based on the Jones-matrix formalism, is performed. In particular, two relevant configurations with and without analyzers are compared and discussed. The latter is found to be more user friendly than the former, since most errors vanish to the first order of approximation. Therefore the optical alignment is greatly simplified. On the other hand, this configuration does not yield complete physical information. We discuss how this drawback can be circumvented in surface studies by use of the three-layer model and a Kramers-Kronig analysis.
authors: A
authors: A
authors: Salvati
authors: P
authors: P
authors: Chiaradia