The superposition of the Bessel and mirrored Bessel beams and investigation of their self-healing characteristic
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DOI: 10.1016/j.ijleo.2019.164057
Abstract: Abstract The superposition of the Bessel and Mirrored Bessel beams, and their self-healing characteristic, using the defined similarity function have been investigated, quantitatively. We use the Huygens convolution method to propagate these beams to study… read more here.
Keywords: bessel beams; bessel mirrored; superposition bessel; mirrored bessel ... See more keywords
Spin polarisation with electron Bessel beams.
Sign Up to like & getrecommendations! Published in 2017 at "Ultramicroscopy"
DOI: 10.1016/j.ultramic.2016.11.029
Abstract: The theoretical possibility to use an electron microscope as a spin polarizer is studied. It turns out that a Bessel beam passing a standard magnetic objective lens is intrinsically spin polarized when post-selected on-axis. In… read more here.
Keywords: polarisation electron; bessel beams; electron bessel; spin polarisation ... See more keywords
Generating Bessel beams with broad depth-of-field by using phase-only acoustic holograms
Sign Up to like & getrecommendations! Published in 2019 at "Scientific Reports"
DOI: 10.1038/s41598-019-56369-z
Abstract: We report zero-th and high-order acoustic Bessel beams with broad depth-of-field generated using acoustic holograms. While the transverse field distribution of Bessel beams generated using traditional passive methods is correctly described by a Bessel function,… read more here.
Keywords: bessel beams; broad depth; field; beams broad ... See more keywords
Expansion of linear focused sound fields using Bessel beams
Sign Up to like & getrecommendations! Published in 2018 at "Journal of the Acoustical Society of America"
DOI: 10.1121/1.5068458
Abstract: Previous work on scattering by Bessel beams shows that expansion of incident sound fields in term of these beams has application to scattering [P. L. Marston, J. Acoust. Soc. Am. 122, 247–252 (2007)]. In this… read more here.
Keywords: bessel beams; expansion; model; acoust soc ... See more keywords
Tunable depth of focus with modified complex amplitude modulation of an optical field.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.453313
Abstract: Bessel beams have nondiffraction and self-healing properties in the propagation direction and are widely used in particle optical manipulation and optical microscopy. Bessel beams can be generated by axicons or spatial light modulators, which can… read more here.
Keywords: modulation; tunable depth; bessel; depth focus ... See more keywords
Generation of extremely high-angle Bessel beams.
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DOI: 10.1364/ao.482826
Abstract: We present a setup to generate tightly focused Bessel beams that is composed of a half-ball lens coupled with a relay lens. The system is simple and compact compared to conventional imaging of axicons based… read more here.
Keywords: bessel; angle; generation extremely; bessel beams ... See more keywords
Generating superimposed Bessel beams with a volume holographic axicon.
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DOI: 10.1364/ao.56.004206
Abstract: Quasi-Bessel beams (QBB) with different profiles are generated with an axicon-telescope system. Beam profiles are found to vary with different axicon-telescope distance δ. QBBs are stored as volume holograms in a photorefractive crystal. Reconstructions of… read more here.
Keywords: bessel beams; generating superimposed; superimposed bessel; axicon ... See more keywords
Long-range quasi-non-diffracting Gauss-Bessel beams in a few-cycle laser field.
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DOI: 10.1364/oe.419486
Abstract: Many applications ranging from nonlinear optics to material processing would benefit from pulsed ultrashort (quasi-)non-diffracting Gauss-Bessel beams (GBBs). Here we demonstrate a straightforward yet efficient method for generating such zeroth- and first-order GBBs using a… read more here.
Keywords: quasi non; diffracting gauss; bessel beams; gauss bessel ... See more keywords
Transversal and axial modulation of axicon-generated Bessel beams using amplitude and phase masks for glass processing applications.
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DOI: 10.1364/oe.447035
Abstract: The control of laser-induced microcracks in the volume of transparent materials is essential for scribing processes. In this paper, we investigate the effect of various amplitude and single-level phase masks on both transverse and axial… read more here.
Keywords: phase masks; bessel beams; axicon generated; generated bessel ... See more keywords
Generation of Bessel beams via femtosecond direct laser writing 3D phase plates.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.473388
Abstract: Featuring diffracting-free propagation and self-reconstruc-tion, Bessel beams (BBs) have sparked great interest in the scientific community. These properties give the potential for application in optical communications, laser machining, and optical tweezers. However, generating such beams… read more here.
Keywords: femtosecond direct; laser writing; phase; bessel beams ... See more keywords
Generation of Bessel beams with tunable longitudinal electric and magnetic fields using an all-dielectric metasurface.
Sign Up to like & getrecommendations! Published in 2023 at "Optics letters"
DOI: 10.1364/ol.476691
Abstract: Optical beams with a pure longitudinally polarized field are of great interest for their unique properties and promising applications in various fields such as optical trapping and three-dimensional microscopy. Here, an all-dielectric metasurface is proposed… read more here.
Keywords: dielectric metasurface; longitudinally polarized; electric magnetic; magnetic fields ... See more keywords