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- W2070667044 abstract "The problem of a Gaussian beam with the spatial energy concentrated along the propagation axis is important in engineering applications. This paper studies scattering of two-dimensional Hermite-Gaussian beams by several parallel conducting cylinders located arbitrarily. First, the relation between the conventional beam modes and the complex beam modes proposed by Siegman is used for expression of a Hermite-Gaussian beam in terms of multipoles with complex points. Next, the scattered field of each multipole field by cylinders is derived. The scattered fields of a conventional beam mode are represented in terms of those of complex-source-point multipole fields. As a numerical example, the effect of the spot size and that of the displacement of the propagation axis are studied in the case where a Gaussian beam is incident with the Bragg angle on the array of eight cylinders. It is found that the directivity of the diffraction of the order -1 is increased with the spot size and the maximum can be found in the direction almost equal to that for a plane wave incidence." @default.
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- W2070667044 date "1987-01-01" @default.
- W2070667044 modified "2023-09-27" @default.
- W2070667044 title "Scattering of Hermite-Gaussian beams by parallel conducting cylinders" @default.
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- W2070667044 doi "https://doi.org/10.1002/ecja.4410700612" @default.
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