Results 41 to 50 of about 3,652 (291)
Achromatic vector vortex beams from a glass cone [PDF]
Nature Communications, 2016 AbstractThe reflection of light is governed by the laws first described by Augustin-Jean Fresnel: on internal reflection, light acquires a phase shift, which depends on its polarization direction with respect to the plane of incidence. For a conical reflector, the cylindrical symmetry is echoed in an angular variation of this phase shift, allowing us ...
Radwell, N. +3 more
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Vector spherical quasi-Gaussian vortex beams [PDF]
Physical Review E, 2014 Model equations for describing and efficiently computing the radiation profiles of tightly spherically-focused higher-order electromagnetic beams of vortex nature are derived stemming from a vectorial analysis with the complex-source-point method.
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Results in Physics, 2022 Based on the Richards–Wolf vectorial diffraction theory, we investigate the tight-focusing properties of the chirp modulation linearly polarized circular Airy Gaussian vortex beams (C-LPCAiGVB) through high NA objective lens.
Xueying Ouyang
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IEEE Photonics Journal, 2019 Singular beams with spatially variant field distributions have various fantastic applications. However, one of the significant challenges that hinder the wide application of singular beams is how to effectively identify the topological charge and the ...
Yanliang He +10 more
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Purity of Vector Vortex Beams through a Birefringent Amplifier [PDF]
Physical Review Applied, 2018 Creating high-quality vector vortex (VV) beams is possible with a myriad of techniques at low power, and while a few studies have produced such beams at high-power, none have considered the impact of amplification on the vector purity. Here we employ novel tools to study the amplification of VV beams, and in particular the purity of such modes.
Sroor, Hend +4 more
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Rotational Doppler Effect of Vector Beams
PhotonicsThe optical rotational Doppler effect occurs when vortex beams are scattered by rotating objects and demonstrate the Doppler frequency shifts in scattered beams, which are associated with the optical angular momentum of vortex beams and the relative ...
Hehe Li, Dong Xu, Xinzhong Li
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Optical Helicity of Light in the Tight Focus
Photonics, 2023 Using the Richards–Wolf formalism, we obtain explicit analytical expressions for the optical helicity density at the tight focus of four different light beams: a linearly polarized optical vortex, an optical vortex with right-handed circular polarization,
Alexey A. Kovalev +2 more
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Real-Time Phase Conjugation of Vector Vortex Beams [PDF]
ACS Photonics, 2019 Vector vortex beams have played a fundamental role in the better understanding of coherence and polarization. They are described by spatially inhomogeneous polarization states, which present a rich optical mode structure that has attracted much attention for applications in optical communications, imaging, spectroscopy and metrology.
André G. de Oliveira +6 more
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Laser–Material Interactions of High-Quality Ultrashort Pulsed Vector Vortex Beams
Micromachines, 2021 Diffractive multi-beams based on 1 × 5 and 2 × 2 binary Dammann gratings applied to a spatial light modulator (SLM) combined with a nanostructured S-wave plate have been used to generate uniform multiple cylindrical vector beams with radial and azimuthal
Yue Tang +6 more
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Broadband Vortex Beam Modulating System Based on Electrically Controlled Liquid Crystal Devices
Photonics, 2023 Vortex beams with helical phase wavefronts have recently emerged as a research hotspot because of their widespread applications such as ultra-high dimensional information encoding, quantum entanglement, and data transmission due to their unique ...
Xinyi Zhou +5 more
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