Articles with "annular beam" as a keyword



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Exact graded-index profile to produce an annular beam

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Published in 2020 at "Optics Communications"

DOI: 10.1016/j.optcom.2020.126037

Abstract: Abstract This work presents the exact radial refractive index profile of a graded-index lens required to produce an annular beam. The index profile variation obtained is compatible with MCVD fiber fabrication process. Moreover, we show… read more here.

Keywords: index; produce annular; graded index; annular beam ... See more keywords
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Electromagnetic Waves Dispersion and Interaction of an Annular Beam-Ion Channel System in Plasma Waveguide

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Published in 2017 at "Advances in Mathematical Physics"

DOI: 10.1155/2017/8141549

Abstract: A linear theory for the electromagnetic properties and interactions of an annular beam-ion channel system in plasma waveguide is presented. The dispersion relations for two families of propagating modes, including the electrostatic and transverse magnetic… read more here.

Keywords: annular beam; ion channel; interaction; beam ... See more keywords
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Investigation of the laser-sustained plasma of a Xenon lamp driven by an annular beam.

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Published in 2023 at "Optics express"

DOI: 10.1364/oe.480954

Abstract: Higher brightness UV light sources based on laser-sustained plasma (LSP) finds critical applications in high-resolution optical inspection and measurement. An annular beam focused with a low F-number is proposed for the first time to investigate… read more here.

Keywords: investigation laser; laser sustained; beam; sustained plasma ... See more keywords
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Photoacoustic testing of shear viscoelastic properties of soft tissues using annular beam illumination.

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Published in 2022 at "Optics letters"

DOI: 10.1364/ol.464551

Abstract: This Letter reports a new, to the best of our knowledge, photoacoustic excitation method for evaluating the shear viscoelastic properties of soft tissues. By illuminating the target surface with an annular pulsed laser beam, circularly… read more here.

Keywords: beam; shear viscoelastic; properties soft; soft tissues ... See more keywords
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Generation of a vortex point adjustable vortex array based on decentered annular beam pumping.

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Published in 2023 at "Optics letters"

DOI: 10.1364/ol.490194

Abstract: An adjustable optical vortex array (OVA) based on decentered annular beam pumping has been demonstrated in an end-pumped Nd:YVO4 laser. This method allows for not only the transverse mode locking of different modes, but also… read more here.

Keywords: beam pumping; based decentered; vortex array; decentered annular ... See more keywords