2011/12/15 by E. H. Lock, Edwin H. Lock, Lock, Edwin H. · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Advanced Antenna and Metasurface Technologies #Advanced optical system design #Classical Physics (physics.class-ph) #FOS: Physical sciences #Optical Coatings and Gratings #Optics (physics.optics) #physics.class-ph #physics.optics
paper · pdf · doi:10.48550/arxiv.1112.3929
5 pages, 2 figures, to be published in Physics-Usprkhi in 2012
arxiv created 2011/12/15 · openalex publication_date 2011/12/15 · arxiv updated 2011/12/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
2-D diffraction patterns arising in the far-field region were investigated theoretically for the case, when the plane wave with non collinear group and phase velocities is incident on the wide slit in opaque screen with arbitrary orientation. This investigation was carried out by consideration as an example of magnetostatic surface wave diffraction in tangentially magnetized ferrite slab. It was deduced the universal analytical formula, which one can use to calculate the angular width of diffractive beam in any 2-D anisotropic geometries for the waves of various nature. It was shown, that in 2-D anisotropic geometries this width may be not only more or less then the value L/D (L - wavelength of incident wave, D - length of slit), but it also may be equal to zero in certain conditions.