Influence of the light propagation direction on the diffraction structures self-induced within the nonlinear Fabry-Perot interferometer

Formation of regular 1D patterns at the output surface of Fabry-Perot interferometer has been experimentally studied using the samples of X- and Z- cut lithium niobate. The initial light fields were light beams with the circular cross section characterized by the Gaussian profile and the almost homogeneous light field.