Topic
Bessel beam
About: Bessel beam is a research topic. Over the lifetime, 1946 publications have been published within this topic receiving 42264 citations.
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TL;DR: In this article, a fast Gaussian expansion approach is used to investigate fundamental and second-harmonic generation in practical Bessel beams of finite aperture, and the analysis is based on the integral solutions of the KZK equation under the quasilinear approximation.
5 citations
TL;DR: In this article, a collimated hollow beam was generated using a single axicon mirror, and the focusing of this hollow beam has been studied using different focusing elements (axicon lens and spherical lens).
Abstract: We report the generation of a collimated hollow beam using a single axicon mirror. The focusing of this hollow beam has been studied using different focusing elements—axicon lens and spherical lens. The results show that if parameters of the focusing lenses are chosen suitably, nearly identical intensity patterns of Bessel beams in the focal region of the lenses can be obtained with two different types of focusing lenses.
5 citations
TL;DR: In this article, the authors formulated the set of equations that describe the trajectories of electrons counter-propagating along a radially polarized optical Bessel beam (OBB) and showed that a significant fraction of the electrons can be transversally trapped by the OBB even in the case of "un-matched" injection.
Abstract: We formulate the set of equations that describe the trajectories of electrons counter-propagating along a radially polarized optical Bessel beam (OBB). It is shown that a significant fraction of the electrons can be transversally trapped by the OBB even in the case of “un-matched” injection. Moreover, these transversally trapped particles (TTP) can be transported without loss over more than half a meter long interaction region.
5 citations
TL;DR: Good agreement among theoretical analysis, full-wave simulation, and experimental results demonstrate that the proposed FRA successfully generates non-diffracting Bessel beams and, moreover, the reflectarray elements are fully integrated with the feeding source in the same low-cost single-layered printed circuit board.
Abstract: This Letter proposes a highly integrated reflection-type approach to generate non-diffracting Bessel beams using a source-integrated folded reflectarray antenna (FRA). The FRA not only transforms spherical waves radiated by the feeding source to conical waves but also directly produces Bessel beams by specifying the phase distribution of reflectarray elements. To validate this approach, a millimeter-wave zero-order Bessel beam generator and a conventional collimated beam structure are analyzed, designed, fabricated, and measured. Good agreement among theoretical analysis, full-wave simulation, and experimental results demonstrate that the proposed FRA successfully generates non-diffracting Bessel beams and, moreover, the reflectarray elements are fully integrated with the feeding source in the same low-cost single-layered printed circuit board.
5 citations
TL;DR: In this article, the spontaneous emission of an atom inside a very high finesse Fabry-Perot micro-cavity of the type employed in semiconductor microlasers was shown to generate a non-diffracting Bessel beam outside the micro-Cavity.
5 citations