Modeling and empirical characterization of the polarization response of off-plane reflection gratings

Off-plane reflection gratings were previously predicted to have different efficiencies when the incident light is polarized in the transverse-magnetic (TM) versus transverse-electric (TE) orientations with respect to the grating grooves. However, more recent theoretical calculations which rigorously account for finitely conducting, rather than perfectly conducting, grating materials no longer predict significant polarization sensitivity. We present the first empirical results for radially ruled, laminar groove profile gratings in the off-plane mount, which demonstrate no difference in TM versus TE efficiency across our entire 300-1500 eV bandpass. These measurements together with the recent theoretical results confirm that grazing incidence off-plane reflection gratings using real, not perfectly conducting, materials are not polarization sensitive.

Scattering by one-dimensional random rough metallic surfaces in a conical configuration: several polarizations

Experimental results on the angular distribution of the light scattered by a one-dimensional gold-coated randomly rough surface in a conical configuration are presented. Several polarizations are considered for the incident and the detected intensities. The surface profile of the sample constitutes a good approximation to a Gaussian random process with a Gaussian correlation function. Effects related to the phenomenon of enhanced backscattering are observed.

Scattering by one-dimensional random rough metallic surfaces in a conical configuration

We present experimental results on the angular distribution of the light scattered by a one-dimensional goldcoated randomly rough surface in a conical configuration. The term conical refers to the case in which the plane of incidence makes an oblique angle with respect to the generators of the surface. The surface profile of our sample constitutes a good approximation to a Gaussian random process with a Gaussian correlation function. Effects related to the phenomenon of enhanced backscattering are observed.