Results 41 to 50 of about 2,790,274 (339)
Generating a new type of polygonal perfect optical vortex.
Optics Express, 2021 We generate a new type of perfect optical vortex called the polygonal perfect optical vortex (PPOV) by combining the Bessel-Gauss beam with the high-order cross-phase (HOCP) at the plane of a spatial light modulator (SLM). This is the first time that the
Chen Wang +7 more
semanticscholar +1 more source
Calibration-Free Vector Magnetometry Using Nitrogen-Vacancy Center in Diamond Integrated with Optical Vortex Beam. [PDF]
Nano letters (Print), 2020 We report a new method to determine the orientation of individual nitrogen-vacancy (NV) centers in a bulk diamond and use them to realize a calibration-free vector magnetometer with nanoscale resolution. Optical vortex beam is used for optical excitation
Bing Chen +9 more
semanticscholar +1 more source
Vortex Beam in a Turbulent Kerr Medium for Atmospheric Communication
Photonics, 2023 The dynamics of the topological charge of a vortex optical beam propagating in turbulent air while accounting for the cubic nonlinearity is theoretically considered.
Andrey D. Bulygin +2 more
doaj +1 more source
Nonlinear optical vortex coronagraph
Optics Letters, 2020 A nonlinear optical vortex coronagraph (n-OVC) based on sum-frequency generation (SFG) in a periodically poled lithium niobate (PPLN) crystal is presented. We demonstrate an n-OVC by mixing the image of an on-axis point source ( λ s = 1.6 µ m ) inside the PPLN crystal with a pump beam (
Einstom Engay, Peter John Rodrigo
openaire +3 more sources
Photonics, 2022 Using the two-dimensional nonlinear Schrödinger equation, the collapse dynamics of vortex beams in a Kerr medium with refractive index modulation and parity–time (PT) symmetric lattices are explored. The critical power for the collapse of vortex beams in
Gang Yao, Yuhua Li, Rui-Pin Chen
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Hybrid WDM and Optical-CDMA over Multi-Mode Fiber Transmission System based on Optical Vortex
, 2021 The optical vortex has recently attracted scholars to implement it in optical tweezers, microscopy, optical communications, quantum information processing, optical trapping, and laser machining.
Alaan Ghazi +9 more
semanticscholar +1 more source
Advances on Solid-State Vortex Laser
Photonics, 2022 Vortex beams (VBs) are structured beams with helical wavefronts carrying orbital angular momentum (OAM) and they have been widely used in lots of domains, such as optical data-transmission, optical tweezer, quantum entanglement, and super-resolution ...
Zhichao Zhang +3 more
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Optics Express, 2010 Laser ablation of Ta plates using nanosecond optical vortex pulses was carried out, for the first time. It was suggested that owing to orbital angular momentum of optical vortex, clearer and smoother processed surfaces were obtained with less ablation threshold fluence, in comparison with the ablation by a nonvortex annular beam modified from a ...
Hamazaki, Junichi +5 more
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Effect of Twisting Phases on the Polarization Dynamics of a Vector Optical Field
Photonics, 2022 The effect of twisting phases on the polarization dynamics of a vector vortex beam with a spatially variant state of polarization (SoP) is investigated theoretically and experimentally.
Quanbin Liu +6 more
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Review on vortex beams with low spatial coherence
Advances in Physics: X, 2019 Vortex beams with helical phase, carrying phase singularity and orbital angular momentum, have attract great attention in the past decades due to their wide applications in optical communications, optical manipulation, super-resolution imaging and so on.
Xianlong Liu, Jun Zeng, Yangjian Cai
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