Results 61 to 70 of about 3,654 (163)
Ring-broken optical vortices with an adjustable opening
Results in Physics, 2019 A modified helical phase is presented in this paper. The generated vortex beams with the modified helical phases are characterized with ring-broken intensity distributions.
Shubo Cheng +8 more
doaj +1 more source
, 2017 Recent advances in intense short pulse laser interaction with thin foil enable us to accelerates the ions upto relativistic velocity in a controlled way. The accelerated ion beams can be utilized to generate the ion vortex beam in a similar way as it has been done for electron, neutron and photon vortex beam case. We present a theoretical demonstration
Shukla, Chandrasekhar, Das, Amita
openaire +2 more sources
Generation of multiterawatt vortex laser beams [PDF]
Applied Optics, 2014 13 pages, 7 ...
Ament, Craig +5 more
openaire +3 more sources
Twisted Spatiotemporal Optical Vortex Random Fields
IEEE Photonics Journal, 2021 We present twisted spatiotemporal optical vortex (STOV) beams, which are partially coherent light sources that possess a coherent optical vortex and a random twist coupling their space and time dimensions.
Milo Hyde
doaj +1 more source
Deflective Vortex Beam Generation Based on Metasurfaces in the Terahertz Band
Leida xuebao, 2021 Terahertz vortex beams can be used to improve the communication capacity of radar communication systems and the resolution of imaging systems. This paper presents a deflective vortex beam generation method based on a reflective metasurface working in the
Hongyu SHI +6 more
doaj +1 more source
Optical vortex braiding with Bessel beams
Optics Letters, 2020 We propose the braiding of optical vortices in a laser beam with more than 2 π rotation by superposing Bessel modes with a plane wave. We experimentally demonstrate this by using a Bessel–Gaussian beam and a coaxial Gaussian, and we present measurements of three complete braids. The amount of braiding is fundamentally limited only
Andrew A. Voitiv +3 more
openaire +3 more sources
Photonics, 2023 Vortex beams carry orbital angular momentum (OAM), and their inherent infinite dimensional eigenstates can enhance the ability for optical communication and information processing in the classical and quantum fields.
Yanzhu Zhang +4 more
doaj +1 more source
Second harmonic of higher-order Poincaré sphere beam with two orthogonal 5%MgO:PPLN crystals
APL PhotonicsIn this work, the second harmonic (SH) of higher-order Poincaré sphere (HOPS) beam was introduced and demonstrated with two orthogonal 5%MgO:PPLN crystals.
Qinan Jiang +7 more
doaj +1 more source
Photonics Research, 2023 Terahertz vortices prompt numerous advanced applications spanning classical and quantum communications, sensing, and chirality-based detection, owing to the inherent physical properties of terahertz waves and orbital angular momentum (OAM). Nonetheless, existing methodologies for generating terahertz vortices face challenges such as unalterable ...
Zi-Wen Zhang +3 more
openaire +1 more source
Exploring the potential of random lasers for vortex beam generation and image edge enhancements [PDF]
APL PhotonicsVortex beams, characterized by their unique property of carrying orbital angular momentum, hold significant promise for applications in cutting-edge fields, such as high-capacity optical communications, information encryption, and super-resolution ...
Liming Gao +5 more
doaj +1 more source