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
Theoretical study of dynamic focal field modulation via stretchable diatomic metalens.
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DOI: 10.1364/oe.564792
Abstract: Planar metalenses have distinct advantages over their traditional bulky refractive lens in terms of being lightweight and integrable. Their remarkable ability to modulate the phase and amplitudes of incident light without restrictions offers a revolutionary… read more here.
Keywords: field; focal field; theoretical study; field modulation ... See more keywords