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Polarization Strips in the Focus of a Generalized Poincaré Beam
PhotonicsWe analyze the tight focusing of a generalized Poincaré beam using a Richards–Wolf formalism. Conventional Poincaré beams are superpositions of two Laguerre–Gaussian beams with orthogonal polarization, while the generalized Poincaré beams are composed of
Victor V. Kotlyar +3 more
doaj +2 more sources
PLoS ONE, 2022 Background Poria cocos (Schw.) Wolf or Fuling is one of the top 10 most frequently prescribed herbs in China for the treatment of type 2 diabetes mellitus (T2DM).
Y. Di +7 more
semanticscholar +1 more source
Sharp focusing of a light field with polarization and phase singularities of an arbitrary order [PDF]
Компьютерная оптика, 2019 Using the Richards-Wolf formalism, we obtain general expressions for all components of the electric and magnetic strength vectors near the sharp focus of an optical vortex with the topological charge m and nth-order azimuthal polarization.
Victor Kotlyar +2 more
doaj +1 more source
Experimental investigation of the energy backflow in the tight focal spot
Компьютерная оптика, 2020 Using two identical microobjectives with a numerical aperture NA = 0.95, we experimentally demonstrate that the on-axis intensity near the tight focal spot of an optical vortex with a topological charge 2 is zero for right-handed circular polarization ...
V.V. Kotlyar +4 more
doaj +1 more source
Photometric Redshift Biases from Galaxy Evolution [PDF]
, 2010 Proposed cosmological surveys will make use of photometric redshifts of galaxies that are significantly fainter than any complete spectroscopic redshift surveys that exist to train the photo-z methods.
C. Jonathan MacDonald +2 more
core +3 more sources
Journal of Physics: Conference Series, 2020 It was shown that tightly focused cylindrical vector beam of m-th order produces reverse energy flow in the focal plane (m=2). If m=3 the reverse energy flow on the axis is equal to zero and near the axis it increases in proportion to a square of the ...
S. Stafeev, A. Nalimov, V. Kotlyar
semanticscholar +1 more source
Energy-momentum balance in quantum dielectrics [PDF]
, 2005 We calculate the energy-momentum balance in quantum dielectrics such as Bose-Einstein condensates. In agreement with the experiment [G. K. Campbell et al. Phys. Rev. Lett.
L. D. Landau +11 more
core +2 more sources
Spin Hall Effect of Double-Index Cylindrical Vector Beams in a Tight Focus
Micromachines, 2023 We investigate the spin angular momentum (SAM) of double-index cylindrical vector beams in tight focus. Such a set of beams is a generalization of the conventional cylindrical vector beams since the polarization order is different for the different ...
A. Kovalev, V. Kotlyar
semanticscholar +1 more source
Pancharatnam-Berry phase shaping for control of the transverse enhancement of focusing.
Optics Letters, 2019 We show that elongating a tightly focused field in the direction perpendicular to the optical axis is possible. We demonstrate our approach by specially shaping the Pancharatnam-Berry (PB) phase.
Zhongsheng Man, Xiujie Dou, S. Fu
semanticscholar +1 more source
The Non-Vortex Inverse Propagation of Energy in a Tightly Focused High-Order Cylindrical Vector Beam
IEEE Photonics Journal, 2019 In this paper, the tight focusing of high-order cylindrical vector beams (beams with polarization singularity) was investigated. Using the Richards–Wolf formalism, there were obtained expressions for all projections of the electric and magnetic ...
Sergey S. Stafeev +3 more
doaj +1 more source