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Generation of Bessel beams with 3D-printed lens

机译:使用3D打印镜头生成贝塞尔光束

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摘要

In this article, the 3D-printed dielectric lens is proposed to generate Besselbeam in millimeter-wave band. The dielectric lens is made of many square unitcells with the side length of a half wavelength. The unit cells with different thicknessesgenerate different insertion phase shift to the transmitted millimeter wave.The insertion phase distribution of the lens is calculated by comparing the phasedistributions of the incident Gaussian beam and the desired output Bessel beam.Three types of lenses are simulated and fabricated using 3D printing technologywith Nylon. The measured magnitude and phase distributions of zero-order Besselbeam agree with the simulated results very well and the measured phase distributionsof the first-order Bessel beam carry orbital angular momentum.
机译:在本文中,提出了3D打印介电透镜以生成毫米波段的贝塞尔光束。介电透镜由许多正方形单元构成,其边长为半个波长。厚度不同的晶胞对透射的毫米波产生不同的插入相移。通过比较入射高斯光束和所需输出贝塞尔光束的相位分布来计算透镜的插入相分布。使用该透镜模拟和制造三种类型的透镜尼龙3D打印技术测得的零阶贝塞尔光束的幅值和相位分布与模拟结果非常吻合,并且测得的一阶贝塞尔光束的相位分布带有轨道角动量。

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