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 refractive system is designed to convert a high-power annular beam into a circular Bessel beam, and the input and output surface of the proposed system is derived.
Abstract: A refractive system is designed to convert a high-power annular beam into a circular Bessel beam. The input and output surface of the proposed system is derived. We provide cubic polynomial approximation of the surface profiles. A ray tracing through the complete system is provided to verify the design. The design parameters can be selected to choose the desired beam power in the central lobe and length of the refractive system.
1 citations
Patent•
29 Dec 2015
TL;DR: In this article, a microstructure forming apparatus is adapted for processing a workpiece and includes: a light source for emitting light toward the workpiece; a first axicon disposed between the light source and the work piece; and a second axicon discarded between the first and the second axicons.
Abstract: A microstructure forming apparatus is adapted for processing a workpiece and includes: a light source for emitting light toward the workpiece; a first axicon disposed between the light source and the workpiece; and a second axicon disposed between the first axicon and the workpiece. Light emitted from the light source forms a high-order Bessel beam after passing through the first axicon and the second axicon in sequence for processing and forming a microstructure in the workpiece.
1 citations
19 Jul 2015
TL;DR: In this article, two different metasurface lenses are designed to collimate the radiation from the Bessel beam and convert the polarization from radial to linear and circular, respectively.
Abstract: Two lens-antennas with a subwavelength overall thickness are reported. The lens-antennas consist of a metasurface lens placed a subwavelength distance above a planar, leaky radial waveguide that generates a TM-polarized Bessel beam (Bessel beam launcher). Two different metasurface lenses are designed to collimate the radiation from the Bessel beam launcher and convert the polarization from radial to linear and circular, respectively. The two lens-antennas are fabricated using standard printed circuit board processes, and their performance is experimentally characterized. The same design procedure could be used to realize metasurfaces that control the radiation of an arbitrary source.
1 citations
TL;DR: In this paper , an approach for preparing anti-icing curved/tilted surfaces based on Bessel beam is proposed, which can be fabricated in one-step by utilizing the long focal depth of Besselbeam.
1 citations
1 citations