Results 51 to 60 of about 4,307 (260)
Plasmonic Generation of Spatiotemporal Optical Vortices
Photonics, 2023 We investigate the transformation of spatiotemporal optical signals using the Kretschmann configuration with an additional dielectric layer, which can be referred to as the “generalized Kretschmann setup”. We demonstrate that in the considered structure,
Artem I. Kashapov +3 more
doaj +1 more source
Mechanical effects of optical vortices
, 1999 We concentrate on the forces and torques exerted on transparent and absorbing particles trapped in laser beams containing optical vortices. We review previous theoretical and experimental work and then present new calculations of the effect of vortex beams on absorbing particles.
Heckenberg, N. R. +3 more
openaire +3 more sources
Optical Signature of Moiré Superlattices Formed by Twisted SrTiO3 Membranes
Advanced Functional Materials, EarlyView.We discover optical signatures from bonded interfaces in twisted SrTiO3 moiré superlattices, including low‐frequency Raman vibrational modes and strong second‐harmonic generation, consistent with strong interlayer coupling inferred from cross‐sectional electron microscopy and ab initio calculations. ABSTRACT Moiré superlattices formed at the interfaces
T. A. M. Ragib Shahriar +13 more
wiley +1 more source
Statistical studies on optical vortices in dynamic speckle fields
Journal of Biomedical Photonics & Engineering, 2018 New parameters to statistically describe and differentiate between different decorrelation behaviors in dynamic speckle fields are described. These decorrelation behaviors are surrogate descriptors of the dynamics of the underlying processes in object ...
Anindya Majumdar, Sean J. Kirkpatrick
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Advanced Functional Materials, EarlyView.Photoaligned and photopatterned liquid crystal platforms provide programmable control of optical phase, polarization, and spin‐orbit interactions, enabling compact generation of structured light and complex wavefronts. This review highlights how tailored molecular orientations transform simple beams into designed optical fields, opening versatile ...
Le Zhou +6 more
wiley +1 more source
Optical vortex ladder via Sisyphus pumping of Pseudospin
Nature CommunicationsRobust high-order optical vortices are much in demand for applications in optical manipulation, optical communications, quantum entanglement and quantum computing.
Sihong Lei +5 more
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Nanoscale Spatial Tuning of Superconductivity in Cuprate Thin Films via Direct Laser Writing
Advanced Functional Materials, EarlyView.Maskless direct laser writing enables local control of oxygen stoichiometry in epitaxial YBCO thin films under ambient conditions. Sub‐micrometer grayscale patterns with tunable optical response and superconducting transport properties are achieved.
Irene Biancardi +11 more
wiley +1 more source
Spatiotemporal optical vortex reconnections of multi-vortices
Scientific ReportsVortex reconnections are ubiquitous events found in diverse media. Here we show that vortex reconnections also occur between spatiotemporal vortices in optical waves.
Jordan Adams, Imad Agha, Andy Chong
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Perfect Optical Vortex to Produce Controllable Spot Array
Frontiers in Physics, 2022 The perfect optical vortex has successfully aroused substantial interest from researchers for its central dark hollow caused by spatial phase singularity in recent years.
Xiaotong Jiang +8 more
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Topological Stability of Stored Optical Vortices
Physical Review Letters, 2007 4 pages, 4 figures v2: minor grammatical corrections v3: problem with references fixed v4: minor clarifications added to the ...
Pugatch, R. +4 more
openaire +3 more sources