Twisted moiré photonic crystal enabled optical vortex generation through bound states in the continuum. [PDF]
Nat Commun, 2023 The twisted stacking of two layered crystals has led to the emerging moiré physics as well as intriguing chiral phenomena such as chiral phonon and photon generation.
Zhang T +8 more
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Near and mid-infrared optical vortex parametric oscillator based on KTA [PDF]
Scientific Reports, 2021 We investigated high energy, near and mid-infrared optical vortex lasers formed by a 1 μm optical vortex-pumped KTiOAsO4 (KTA) optical parametric oscillator. The orbital angular momentum (OAM) of the pump beam can be selectively transferred to the signal
Mairihaba Ababaike +4 more
doaj +3 more sources
Generation of hexagonal close-packed ring-shaped structures using an optical vortex. [PDF]
Nanophotonics, 2022 An optical vortex possesses a ring-shaped spatial profile and orbital angular momentum (OAM) owing to its helical wavefront. This form of structured light has garnered significant attention in recent years, and it has enabled new investigations in ...
Kawaguchi H +9 more
europepmc +4 more sources
Integrated optical vortex microcomb [PDF]
Nature Photonics, 2022 The explorations of physical degrees of freedom with infinite dimensionalities, such as orbital angular momentum and frequency of light, have profoundly reshaped the landscape of modern optics with representative photonic functional devices including optical vortex emitters and frequency combs.
Bo Chen +18 more
openaire +3 more sources
Optical metasurfaces for generating and manipulating optical vortex beams. [PDF]
Nanophotonics, 2022 Optical vortices (OVs) carrying orbital angular momentum (OAM) have attracted considerable interest in the field of optics and photonics owing to their peculiar optical features and extra degree of freedom for carrying information.
Ahmed H +7 more
europepmc +2 more sources
Optical Vortex Brillouin Laser
Laser & Photonics Reviews, 2023 AbstractOptical vortices, which have been extensively studied over the last decades, offer an additional degree of freedom useful in many applications, such as optical tweezers and quantum control. Stimulated Brillouin scattering (SBS), providing a narrow linewidth and a strong nonlinear response, has been used to realize quasi‐continuous wave lasers ...
Xinglin Zeng +7 more
openalex +4 more sources
Ultra-secure optical encryption based on tightly focused perfect optical vortex beams. [PDF]
Nanophotonics, 2022 Light’s orbital angular momentum (OAM) with inherent mode orthogonality has been suggested as a new way to the optical encryption. However, the dependence of annular intensity profiles on the topological charge complicates nanoscale light–matter ...
Yang Q +8 more
europepmc +2 more sources
Angular-multiplexed multichannel optical vortex arrays generators based on geometric metasurface [PDF]
iScience, 2021 Summary: Recently, metasurface-based multichannel optical vortex arrays have attracted considerable interests due to its promising applications in high-dimensional information storage and high-secure information encryption.
Jinjin Jin +7 more
doaj +2 more sources
The generation of femtosecond optical vortex beams with megawatt powers directly from a fiber based Mamyshev oscillator. [PDF]
Nanophotonics, 2022 Numerous approaches have been developed to generate optical vortex beams carrying orbital angular momentum (OAM) over the past decades, but the direct intracavity generation of such beams with practical output powers in the femtosecond regime still ...
Lin D, Feng Y, Ren Z, Richardson DJ.
europepmc +2 more sources
Spin-orbit coupling in van der Waals materials for optical vortex generation [PDF]
Light: Science & ApplicationsAn optical vortex beam has attracted significant attention across diverse applications, including optical manipulation, phase-contrast microscopy, optical communication, and quantum photonics.
Jaegang Jo +5 more
doaj +2 more sources