Results 31 to 40 of about 2,790,274 (339)
Terawatt-Class Few-Cycle Short-Wave Infrared Vortex Laser
Ultrafast Science, 2023 As a driving source for many nonlinear vortex phenomena, such as the generation of isolated attosecond optical vortices, terahertz vortices, etc., terawatt-class few-cycle short-wave infrared vortex lasers are now attracting widespread attention. However,
Renyu Feng +6 more
doaj +1 more source
Optical vortex dichroism in chiral particles [PDF]
Physical Review A, 2021 Circular dichroism is the differential rate of absorption of right- and left-handed circularly polarized light by chiral particles. Optical vortices which convey orbital angular momentum (OAM) possess a chirality associated with the clockwise or anti ...
Kayn A. Forbes, G. Jones
semanticscholar +1 more source
Subpixel localization of optical vortices using artificial neural networks [PDF]
Metrology and Measurement Systems, 2021 Optical vortices are getting attention in modern optical metrology. Because of their unique features, they can be used as precise position markers. In this paper, we show that an artificial neural network can be used to improve vortex localization.
Agnieszka Popiołek-Masajada +2 more
doaj +1 more source
Multiwavelength high-order optical vortex detection and demultiplexing coding using a metasurface
Advanced Photonics Nexus, 2022 . Orbital angular momentum (OAM) of an optical vortex has attracted great interest from the scientific community due to its significant values in high-capacity optical communications such as mode or wavelength division multiplexer/demultiplexer. Although
Dahai Yang +8 more
semanticscholar +1 more source
Entangled Optical Vortex Links [PDF]
Physical Review Letters, 2011 Optical vortices are lines of phase singularity which percolate through all optical fields. We report the entanglement of linked optical vortex loops in the light produced by spontaneous parametric down-conversion. As measured by using a Bell inequality, this entanglement between topological features extends over macroscopic and finite volumes.
Romero, J. +6 more
openaire +3 more sources
Real-time phase measurement of optical vortex via digital holography
Frontiers in Physics, 2023 Real-time phase measurement is of great value to study the evolution of optical vortex. However, it cannot be recorded in real time due to the limitation of the exposure time of the recording device in the experiment. Therefore, based on the temporal and
Huaibin Qiu +5 more
doaj +1 more source
Nanomaterials, 2022 The optical vortex (OV) beams characterized by orbital angular momentum (OAM) possess ubiquitous applications in optical communication and nanoparticle manipulation.
Yue Liu +8 more
doaj +1 more source
High‐Harmonic Optical Vortex Generation from Photonic Bound States in the Continuum
Advanced Optical Materials, 2021 Stemming from bound states in the continuum (BICs), momentum‐space polarization vortices observed in photonic structures provide an attractive approach to generating optical vortex (OV) beams.
L. Kang +4 more
semanticscholar +1 more source
Abrupt autofocusing performance of a circular Airyprime beam with vortex pairs
Results in Physics, 2023 Abrupt autofocusing performance of a circular Airyprime beam (CAPB) with vortex pairs propagating in free space is investigated. Here the vortex pairs are off-axis by default.
Wen-Song Dan +6 more
doaj +1 more source