Results 1 to 10 of about 184,725 (118)
Optical Vortex Solitons in Parametric Wave Mixing [PDF]
, 1999 We analyze two-component spatial optical vortex solitons supported by parametric wave mixing processes in a nonlinear bulk medium. We study two distinct cases of such localised waves, namely, parametric vortex solitons due to phase-matched second-harmonic generation in an optical medium with competing quadratic and cubic nonlinear response, and vortex ...
Tristram J. Alexander +3 more
arxiv +3 more sources
arXiv, 2007 Rankine vortex charateristics of a partially coherent optical vortex are explored using classical and physical optics. Unlike a perfectly coherent vortex mode, the circulation is not quantized. Excess circulation is predicted owing to the wave nature of the composite vortex fields. Based on these findings we propose a vortex stellar interferometer.
Swartzlander, Jr., Grover A. +1 more
arxiv +3 more sources
Dynamical vortex phases in a Bose-Einstein condensate driven by a rotating optical lattice [PDF]
Phys. Rev. Lett. 97, 240404 (2006), 2006 We present simulation results of the vortex dynamics in a trapped Bose-Einstein condensate in the presence of a rotating optical lattice. Changing the potential amplitude and the relative rotation frequency between the condensate and the optical lattice, we find a rich variety of dynamical phases of vortices.
Kenichi Kasamatsu, Makoto Tsubota
arxiv +3 more sources
Optical vortices and vortex solitons [PDF]
, 2005 Optical vortices are phase singularities nested in electromagnetic waves that constitute a fascinating source of phenomena in the physics of light and display deep similarities to their close relatives, quantized vortices in superfluids and Bose-Einstein condensates.
Anton S. Desyatnikov +2 more
+7 more sources
Angular momentum of optical vortex arrays
Optics Express, 2006 Guided by the aim to construct light fields with spin-like orbital angular momentum (OAM), that is light fields with a uniform and intrinsic OAM density, we investigate the OAM of arrays of optical vortices with rectangular symmetry. We find that the OAM per unit cell depends on the choice of unit cell and can even change sign when the unit cell is ...
Johannes Courtial +3 more
openalex +6 more sources
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 ...
Junichi Hamazaki +5 more
openalex +5 more sources
Centrosymmetric Optical Vortex [PDF]
Applied Sciences, 2019 We report on a novel optical vortex, named as centrosymmetric optical vortex (CSOV), which is constructed via four conventional optical vortices (OVs) with different topological charges (TCs). The orbital angular momentum (OAM) density satisfies centrosymmetric distribution.
Hao Zhang +5 more
openaire +3 more sources
Birth and evolution of an optical vortex [PDF]
Optics Express, 2016 Revtex, 7 figures, published ...
VALLONE, GIUSEPPE +5 more
openaire +6 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 ...
Zeng, X. +7 more
openaire +3 more sources
Divergence of optical vortex beams [PDF]
Applied Optics, 2015 4 pages, 4 ...
Shashi Prabhakar +5 more
openaire +4 more sources