Results 31 to 40 of about 4,307 (260)
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.
Desyatnikov, Anton S +2 more
openaire +2 more sources
Vorticity and the birth of optical vortices
, 2019 We exploit the vorticity, familiar from fluid mechanics and the theory of superfluids, as a tool to track the birth and subsequent development of optical vortices at a spiral phase plate.
Potoček, Václav +2 more
openaire +2 more sources
Structured Optical Toroidal Vortices with Rotational Symmetry
PhotonicsToroidal vortices, as intriguing topological structures, play a fundamental role across a wide range of physical fields. In this study, we theoretically propose a family of structured optical toroidal vortices as generalized forms of toroidal vortices in
Jinzhan Zhong, Qiwen Zhan
doaj +1 more source
Adaptive Optics and Optical Vortices [PDF]
, 2012 The achievement of minimal angular divergence of a laser beam is one of the most impor‐ tant problems in laser physics since many laser applications demand extreme concentration of radiation. Under the beam formation in the laser oscillator or amplifier with optically in‐ homogeneous gain medium and optical elements, the divergence usually exceeds the ...
S. G., F. A., Yu. I.
openaire +1 more source
Terawatt-Class Few-Cycle Short-Wave Infrared Vortex Laser
Ultrafast Science, 2023 As a driving source for many nonlinear vortex phenomena, such as the generation of isolated attosecond optical vortices, terahertz vortices, etc., terawatt-class few-cycle short-wave infrared vortex lasers are now attracting widespread attention. However,
Renyu Feng +6 more
doaj +1 more source
Supercontinuum generation with optical vortices
Optics Express, 2010 We employ an optical vortex beam for the generation of femtosecond supercontinuum in a solid state medium. We demonstrate that the continuum generation process is initiated by the filamentation of the vortex, resulting in a spatially divergent continuum. Despite the strong self-focusing and the formation of multiple hot-spots along the vortex ring, the
Dreischuh, Alexander +4 more
openaire +3 more sources
Laser‐Induced Graphene from Waste Almond Shells
Advanced Functional Materials, EarlyView.Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova +9 more
wiley +1 more source
Orbital Angular Momentum generation in infrared with Holographic Optical Elements [PDF]
EPJ Web of ConferencesOptical vortices are of interest in the infrared range for applications in the fields of optical fiber communications and femtosecond laser pulses. Among the current techniques used to generate optical vortices, the use of a Spatial Light Modulator (SLM)
Marín-Sáez Julia +4 more
doaj +1 more source
Advanced Functional Materials, EarlyView.We propose a suture‐complementary approach that integrates optical skin clearing with a strain‐programmable luminescent adhesive patch. Hyaluronic acid promotes transdermal delivery of tartrazine to improve optical clearing and stabilizes its interaction with a photosensitizer. Optical clearing increases the penetration depth of visible light into skin,
Seong‐Jong Kim +6 more
wiley +1 more source
Spatiotemporal optical vortex reconnections of loop vortices
NanophotonicsReconnections of spatiotemporal optical vortices have been shown to occur between line vortices. Here, we show that reconnections also occur between spatiotemporal loop vortices in optical waves. As optical loop vortices propagate in a media with spatial
Adams Jordan, Chong Andy
doaj +1 more source