Results 1 to 10 of about 464,591 (286)
Vector Beam Polarization State Spectrum Analyzer [PDF]
Scientific Reports, 2017 We present a proof of concept for a vector beam polarization state spectrum analyzer based on the combination of a polarization diffraction grating (PDG) and an encoded harmonic q-plate grating (QPG).
Ignacio Moreno +5 more
doaj +4 more sources
Scientific Reports, 2018 A scalar polymorphic beam is designed with independent control of its intensity and phase along a strongly focused laser curve of arbitrary shape. This kind of beam has been found crucial in the creation of freestyle laser traps able to confine and drive
Alieva, Tatiana Krasheninnikova +1 more
core +7 more sources
Tip-Enhanced Raman Spectroscopy with High-Order Fiber Vector Beam Excitation [PDF]
Sensors, 2018 We investigated tip-enhanced Raman spectra excited by high-order fiber vector beams. Theoretical analysis shows that the high-order fiber vector beams have stronger longitudinal electric field components than linearly polarized light under tight focusing
Fanfan Lu +8 more
doaj +2 more sources
Integrated multi vector vortex beam generator
Optics Express, 2013 A novel method to generate and manipulate vector vortex beams in an integrated, ring resonator based geometry is proposed. We show numerically that a ring resonator, with an appropriate grating, addressed by a vertically displaced access waveguide emits ...
Boyd, Robert W. +3 more
core +4 more sources
Dielectric Metalens for Superoscillatory Focusing Based on High-Order Angular Bessel Function
Nanomaterials, 2022 The phenomenon of optical superoscillation provides an unprecedented way to solve the problem of optical far-field label-free super-resolution imaging.
Yu Li +6 more
doaj +1 more source
Transverse intensity at the tight focus of a second-order cylindrical vector beam
Компьютерная оптика, 2021 In this paper, an effect of a reverse energy flow at the focus of a second-order cylindrical vector beam which passed through amplitude zone plate was investigated with a scanning near-field optical microscope.
E.S. Kozlova +4 more
doaj +1 more source
Frontiers in Physics, 2021 The spatiotemporal vector Airy-Circular Airy Gaussian vortex wave packet is constructed by solving the (3 + 1)D Schrodinger equation in free space. The wave packet can simultaneously autofocus in space and time by setting the appropriate initial pulse ...
Dong Li +4 more
doaj +1 more source
Vector Beams with Only Transverse Intensity at Focus
Applied Sciences, 2023 In this work, the tight focusing of vector beams with azimuthal polarization and beams with a V-line of polarization singularity (sector azimuthal polarization) was simulated numerically using the Richards–Wolf formulas.
Sergey S. Stafeev +4 more
doaj +1 more source
Versatile Integrated Polarizers Based on Geometric Metasurfaces
Nanomaterials, 2022 We propose versatile integrated polarizers based on geometric metasurfaces. Metasurface polarizer consists of an L-shaped hole array etched on a silver film, and it can simultaneously generate several polarization states, including linear polarization ...
Zhiyuan Yue +3 more
doaj +1 more source
Vector quality measure for vector beams [PDF]
SPIE Proceedings, 2016 Vector beams are spatial modes of light with spatially variant polarization states in the transverse profile. Over the years, vector beams have found their way into plenty of applications ranging from material processing and lithography to electron acceleration and particle trapping.
Sroor, Hend +4 more
openaire +1 more source