Results 41 to 50 of about 113,143 (287)
Vortex solitons in moiré optical lattices
Optics Letters, 2023 We show that optical moiré lattices enable the existence of vortex solitons of different types in self-focusing Kerr media. We address the properties of such states both in lattices having commensurate and incommensurate geometries (i.e., constructed with Pythagorean and non-Pythagorean twist angles, respectively), in the different regimes that occur ...
Sergey K. Ivanov +3 more
openaire +3 more sources
Optical vortex torque measured with optically trapped microbarbells [PDF]
Applied Optics, 2020 Optical vortex beams carry orbital angular momentum and thus exert torque on illuminated objects. A dielectric microtool–a microbarbell–is used in two-laser optical tweezers to measure the torque of a focused optical vortex. The tool was either freely rotating due to the applied torque or set into oscillations by the counteracting force. Four different
Weronika Lamperska +3 more
openaire +3 more sources
PhotonicsThis study presents an efficient and practical intra-cavity approach for selectively generating vortex array laser beams employing a dual-phase modulation digital laser system, which has not yet been completed in single-phase modulation digital laser ...
Ly Ly Nguyen Thi +2 more
doaj +1 more source
Propagation and Transformation of Vortexes in Linear and Nonlinear Radio-Photon Systems
Fibers, 2022 The article is devoted to issues related to the propagation and transformation of vortexes in the optical range of frequency. Within the framework of the traditional and modified model of slowly varying envelope approximation (SVEA), the process of ...
Valery H. Bagmanov +5 more
doaj +1 more source
A novel method to create a vortex in a Bose-Einstein condensate
, 2002 It has been shown that a vortex in a BEC with spin degrees of freedom can be created by manipulating with external magnetic fields. In the previous work, an optical plug along the vortex axis has been introduced to avoid Majorana flips, which take place ...
E. Hodby +16 more
core +1 more source
Polygonal micro-whirlpools induced in ferrofluids
, 2015 We report on the observation of the polygonal whirlpools in the thin layer of ferrofluid under illumination with a laser beam carrying optical vortex and in the presence of a vertical magnetic field. This kind of structures have attracted attention after
Bacia, Marcin +4 more
core +1 more source
Molecular Oncology, EarlyView.Combining PTEN protein assessment and transcriptomic profiling of prostate tumors, we uncovered a network enriched in senescence and extracellular matrix (ECM) programs associated with PTEN loss and conserved in a mouse model. We show that PTEN‐deficient cells trigger paracrine remodeling of the surrounding stroma and this information could help ...
Ivana Rondon‐Lorefice +16 more
wiley +1 more source
Superposition of Optical Vortex Beams for Polarization Measurement
IEEE Photonics Journal, 2021 Polarization measurement has found applications in many fields ranging from quantum science to our daily life. However, traditional polarization measurement systems suffer from large volume and high cost.
Zhongqiang Zhang +4 more
doaj +1 more source
Molecular Oncology, EarlyView.Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff +11 more
wiley +1 more source
Experimental investigation on optical vortex tweezers for microbubble trapping
Open Physics, 2018 In this paper, we investigated the microbubble trapping using optical vortex tweezers. It is shown that the microbubble can be trapped by the vortex optical tweezers, in which the trapping light beam is of vortex beam.
Zhou Xiaoming +3 more
doaj +1 more source