Results 31 to 40 of about 464,591 (286)
Reconstructing the Poynting vector skew angle and wave-front of optical vortex beams via two-channel moir\'e deflectometery [PDF]
, 2013 A novel approach based on the two-channel moir\'e deflectometry has been used to measure both wave-front and transverse component of the Poynting vector of an optical vortex beam. Generated vortex beam by the q-plate, an inhomogeneous liquid crystal cell,
Dashti, Mohsen +5 more
core +3 more sources
Optics Express, 1999 We examine the three-dimensional intensity distribution of vector Bessel-Gauss beams with general polarization near the focus of a nonaperturing thin lens. Recently reported linearly and azimuthally polarized Bessel-Gauss beams are members of this family.
P, Greene, D, Hall
openaire +2 more sources
Nanophotonics, 2023 Using low-refractive-index metamaterials, we design a transmission-type radial-angular cylindrical vector beam generator. A high numerical aperture lens is constructed using an asymmetric meta-grating structure. The metamaterial vector beam generator and
Ke Lan +6 more
doaj +1 more source
Exact nonparaxial beams of the scalar Helmholtz equation [PDF]
, 2003 It is shown that three-dimensional nonparaxial beams are described by the oblate spheroidal exact solutions of the Helmholtz equation. For the first time, their beam behaviour is investigated and their corresponding parameters are defined. Using the fact
Cao +14 more
core +1 more source
Photonic nanojet generated by a spheroidal particle illuminated by a vector Bessel beam
Results in Optics, 2021 The photonic nanojet (PNJ) produced by a vector Bessel beam irradiating a dielectric spheroidal particle is investigated using the Discrete Dipole Approximation. The influence of the beam center, beam order, beam polarization type, and half cone angle of
Yongjie Jia +3 more
doaj +1 more source
, 2007 A unified description of the free-space cylindrical vector beams is presented, which is an integral transformation solution to the vector Helmholtz equation and the transversality condition.
Ashkin +20 more
core +1 more source
Communications Physics, 2023 Air lasing is a simple and promising technique to efficiently produce coherent light in the atmosphere. Yet, its capability to obtain structured light like optical vortices or vector beams is still unexplored.
Jingsong Gao +10 more
doaj +1 more source
Representation theory for vector electromagnetic beams
, 2008 A representation theory of finite electromagnetic beams in free space is formulated by factorizing the field vector of the plane-wave component into a $3 \times 2$ mapping matrix and a 2-component Jones-like vector.
Li, Chun-Fang
core +1 more source
Beams with the transverse-only intensity at the focus
Компьютерная оптикаIn this work, sharp focusing of vector beams with azimuthal polarization and beams with V-line of polarization uncertainty is simulated numerically using the Richards-Wolf formulas.
S.S. Stafeev, N.N. Kazakov, V.V. Kotlyar
doaj +1 more source
Single- and double-vortex vector solitons in self-focusing nonlinear media
, 2004 We study two-component spatial optical solitons carrying an angular momentum and propagating in a self-focusing saturable nonlinear medium. When one of the components is small, such vector solitons can be viewed as a self-trapped vortex beam that guides ...
Kivshar, Yuri S., Salgueiro, Jose R.
core +1 more source