Exploring the focal field of radially polarized beam through electron scattering
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DOI: 10.1016/j.ijleo.2020.165468
Abstract: Abstract An electron scattering scheme is proposed to explore and quantify the focal field of radially polarized beam (RPB). Based on the Richard-Wolf method we deduce the description of the RPB's focal field, analyze the… read more here.
Keywords: field; electron scattering; field radially; focal field ... See more keywords
Generation of rotating optical focal field employing turnstile antenna
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DOI: 10.1016/j.optcom.2021.127205
Abstract: Abstract We report a rotating optical focal field generated by inversely focusing the radiation pattern from a turnstile antenna under a 4Pi focusing system. The turnstile antenna, composed of two mutually perpendicular short dipoles with… read more here.
Keywords: generation rotating; optical focal; field; focal field ... See more keywords
Focal field properties of toroidal double-mode vector beams
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DOI: 10.1016/j.optcom.2021.127514
Abstract: Abstract Integer-order vector beams maintain their physical polarization properties under the paraxial diffraction condition. Fractional-order vector beam with irregular phase change that leading to changeable focusing properties has aroused huge interest research. Herein, we proposed… read more here.
Keywords: double mode; vector; field properties; vector beams ... See more keywords
Numerical modeling for the characteristics study of a focusing ultrashort spatiotemporal optical vortex.
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DOI: 10.1364/oe.471411
Abstract: Spatiotemporal (ST) wave packet carrying pure transverse orbital angular moment (OAM) with subwavelength spatial size has attracted increasing attentions in recent years, which can be obtained by tightly focusing a linear superposition of ST vortices… read more here.
Keywords: numerical modeling; pulse width; focal field; modeling characteristics ... See more keywords