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Plasmonic tomography of optical vortices
Optics Letters, 2010We present a method for analyzing the wavefront of optical vortices that does not involve interferometry but rather uses surface plasmon polaritons (SPPs). We employ a subwavelength slit in a gold film to cut slices from an optical vortex beam and measure the diffraction of the generated SPPs by scattering them off a second slit.
Philip F, Chimento +2 more
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Femtosecond Optical Vortices in Air
Physical Review Letters, 2005We examine the robustness of ultrashort optical vortices propagating freely in the atmosphere. We first approximate the stability regions of femtosecond spinning pulses as a function of their topological charge. Next, we numerically demonstrate that atmospheric optical vortices are capable of conveying high power levels in air over hundreds of meters ...
Antoine, Vinçotte, Luc, Bergé
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Journal of Optics, 2011
METATOYs are regular structures of optical elements that change the direction of light rays according to various generalized refraction laws. They may introduce discontinuities into transmitted wavefronts and create ray fields that do not have wave-optical analogies.
Johannes Courtial, Tomáš Tyc
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METATOYs are regular structures of optical elements that change the direction of light rays according to various generalized refraction laws. They may introduce discontinuities into transmitted wavefronts and create ray fields that do not have wave-optical analogies.
Johannes Courtial, Tomáš Tyc
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Nonlinear Optics: Materials, Fundamentals, and Applications, 1992
Dark soliton stripes (DSS’s) and grids were recently discovered in the cross-section of a laser beam [1] which propagates through a self-defocusing medium. Now we find that a dark soliton stripe can spawn optical vortex pairs of opposite topological charge when subjected to transverse modulations whose period exceeds the soliton size.
G. A. Swartzlander, C. T. Law
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Dark soliton stripes (DSS’s) and grids were recently discovered in the cross-section of a laser beam [1] which propagates through a self-defocusing medium. Now we find that a dark soliton stripe can spawn optical vortex pairs of opposite topological charge when subjected to transverse modulations whose period exceeds the soliton size.
G. A. Swartzlander, C. T. Law
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Diffraction of optical vortices
SPIE Proceedings, 1999Computer simulation of optical vortex diffraction on edge of nontransparent screen demonstrates the possibility for optical vortex to restore from the part of beam passing trough aperture. Regeneration of vortex is shown to take place for any part of the beam passing trough aperture, even if it does not contain vortex core.
I. G. Marienko +2 more
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Science, 2020
Topological Optics Light has several degrees of freedom (wavelength, polarization, pulse length, and so on) that can be used to encode information. A light beam or pulse can also be structured to have the property of orbital angular momentum, becoming a vortex.
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Topological Optics Light has several degrees of freedom (wavelength, polarization, pulse length, and so on) that can be used to encode information. A light beam or pulse can also be structured to have the property of orbital angular momentum, becoming a vortex.
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Conference on Coherence and Quantum Optics, 2007
Optical vortices are nodal lines in 3D optical fields. These lines exist in various topologies. In this paper, the vortex topology in random light fields is investigated numerically with results given for loop size distribution.
K. O’Holleran +2 more
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Optical vortices are nodal lines in 3D optical fields. These lines exist in various topologies. In this paper, the vortex topology in random light fields is investigated numerically with results given for loop size distribution.
K. O’Holleran +2 more
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Spatiotemporal Optical Vortices
2023Light beams carrying orbital angular momentum (OAM) have become a mainstay of optical science and technology. In these beams, well-known examples of which are the Laguerre-Gaussian (LG_pm ) and Bessel-Gaussian (BG_m ) beams, the OAM vector points parallel or anti-parallel to propagation, and is associated with a phase winding 2πm in the plane ...
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26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2020
Based on numerical simulation, the diffraction of vortex beams on a circular opaque screen in a homogeneous medium using the example of Laguerre-Gaussian beam modes is calculated. An analysis of an evolution of diffracted beams from the degree of its overlap by a round screen is performed.
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Based on numerical simulation, the diffraction of vortex beams on a circular opaque screen in a homogeneous medium using the example of Laguerre-Gaussian beam modes is calculated. An analysis of an evolution of diffracted beams from the degree of its overlap by a round screen is performed.
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SPIE Proceedings, 2014
Optical vortices are always created or annihilated in pairs with opposite topological charges. However, the presence of such a vortex dipole does not directly indicate whether they are associated with a creation or an annihilation event. Here we propose a method to distinguish between vortex dipoles that have just been created and those that are about ...
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Optical vortices are always created or annihilated in pairs with opposite topological charges. However, the presence of such a vortex dipole does not directly indicate whether they are associated with a creation or an annihilation event. Here we propose a method to distinguish between vortex dipoles that have just been created and those that are about ...
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