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Femtosecond mid-IR optical vortex laser based on optical parametric chirped pulse amplification
Photonics Research, 2020A femtosecond mid-infrared optical vortex laser can be used for high harmonic generation to extend cutoff energy to the kilo-electron-volt range with orbital angular momentum, as well as other secondary radiations. For these, we demonstrate a high-energy
Junyu Qian +7 more
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Frontiers in Optics, 2003
Optical vortices can provide mechanisms for micromanipulation of micron or sub-micron sized particles as well as a means to generate complicated array patterns. Particularly interesting is the way in which higher order vortices can be triggered by a secondary optical field to explode or implode.
Michael A. Fiddy +1 more
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Optical vortices can provide mechanisms for micromanipulation of micron or sub-micron sized particles as well as a means to generate complicated array patterns. Particularly interesting is the way in which higher order vortices can be triggered by a secondary optical field to explode or implode.
Michael A. Fiddy +1 more
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Achromatic optical vortex lens
Optics Letters, 2006A vortex lens is a useful optical device having applications ranging from astronomy to microscopy. Current vortex masks operate across a narrow bandwidth. Two design schemes are proposed for creating a vortex across a bandwidth exceeding 100 nm in the visible region of the spectrum.
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Optics Communications, 2001
Abstract A structure of wavefront edge dislocations and associated “transversal” optical vortices in an interference field of two two-dimensional Gaussian beams is analyzed. It was shown that the optical vortex rotation is directed toward the area of higher phase velocity in the interference field (the origin of the phase velocity variation is due to
V.A Pas'ko, M.S Soskin, M.V Vasnetsov
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Abstract A structure of wavefront edge dislocations and associated “transversal” optical vortices in an interference field of two two-dimensional Gaussian beams is analyzed. It was shown that the optical vortex rotation is directed toward the area of higher phase velocity in the interference field (the origin of the phase velocity variation is due to
V.A Pas'ko, M.S Soskin, M.V Vasnetsov
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Bi-channel near- and far-field optical vortex generator based on a single plasmonic metasurface
, 2020With the recent development of the metasurface, generating an optical vortex in optical far or near fields is realized in various ways. However, to generate vortices in both the near and far fields simultaneously is still a challenge, although it has ...
Q. Jiang +15 more
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Frontiers in Optics 2004/Laser Science XXII/Diffractive Optics and Micro-Optics/Optical Fabrication and Testing, 2004
Starlight transmitted through an optical vortex was observed to form a dark core in the image of the star despite atmospheric turbulence. This affords opportunities to use optical vortices in the hunt for extrasolar planets and zodiacal dust. Observations using a 60-inch f/16 telescope will be reported.
Grover Swartzlander +5 more
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Starlight transmitted through an optical vortex was observed to form a dark core in the image of the star despite atmospheric turbulence. This affords opportunities to use optical vortices in the hunt for extrasolar planets and zodiacal dust. Observations using a 60-inch f/16 telescope will be reported.
Grover Swartzlander +5 more
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Frontiers in Optics, 2005
An optical vortex may exhibit a hallmark attributed to viscosity in classical fluids: solid-body rotation near the vortex core. This effect, attributed to spatial coherence properties, may be extended beyond optics to other wave systems. Non-quantized circulation results.
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An optical vortex may exhibit a hallmark attributed to viscosity in classical fluids: solid-body rotation near the vortex core. This effect, attributed to spatial coherence properties, may be extended beyond optics to other wave systems. Non-quantized circulation results.
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Superhigh-Resolution Recognition of Optical Vortex Modes Assisted by a Deep-Learning Method.
Physical Review Letters, 2019Orbital angular momentum (OAM) has demonstrated great success in the optical communication field, which theoretically allows an infinite increase of the transmitted capacity.
Zhanwei Liu +3 more
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OPTICAL VORTEX INTERACTION IN LASERS
International Journal of Bifurcation and Chaos, 1994The Maxwell-Bloch equations describing the transverse modes of a large aspect ratio homogeneously broadened single-longitudinal-mode laser are solved numerically. The solutions are visualized by color-coding the intensity and phase of the transverse electric field at each time step and a video showing the detailed time evolution has been made.
Jeffery, Mark, D'Angelo, E. J.
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Optics Communications, 2000
Specific rules are formulated that constrain relationships between optical vortex trajectories on a given manifold. Possible topologies for these trajectories are considered.
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Specific rules are formulated that constrain relationships between optical vortex trajectories on a given manifold. Possible topologies for these trajectories are considered.
openaire +1 more source