Results 41 to 50 of about 21,769 (310)
Компьютерная оптикаIn this work, the propagation of optical vortices with circular, radial, and azimuthal polarization through subwavelength ring gratings with standard and GRIN substrates using a finite difference time domain method is numerically simulated.
D.A. Savelyev
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Frontiers in Physics, 2021 We report on the effects associated with photonic nanojet (PNJ) formation under illumination of a metallic spherical particle with a focused light beam with polarization singularity.
D. O. Plutenko, M. V. Vasnetsov
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Flexoelectric radial polarization of single-walled nanotubes from first-principles
, 2020 Flexoelectricity is the polar response of an insulator to strain gradients such as bending. While the size dependence of this effect makes it weak in bulk systems in comparison to piezoelectricity, it suggests that it plays a bigger role in nanoscale ...
core +1 more source
Sensors, 2013 The polarization characteristics of birefringent tissues could be only partially obtained using linearly polarized light in polarization sensitive optical imaging.
Natallia Eduarda Uzunbajakava +7 more
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One dimensional ferroelectric nanothreads with axial and radial polarization
Nanoscale Horizons, 2023 A one-dimensional ferroelectric nanothread and its novel features.
Jiawei Huang +3 more
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The Astrophysical Journal, 2023 To understand the mechanism behind high- z Ly α nebulae, we simulate the scattering of Ly α in a H i halo about a central Ly α source. For the first time, we consider both smooth and clumpy distributions of halo gas, as well as a range of outflow speeds,
Seok-Jun Chang +4 more
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Vortex sensing analysis of radially and pseudo-radially polarized beams [PDF]
Optical Engineering, 2013 We present a simple method to check the exact realization of a radially polarized light beam by means of a vortex-sensing diffraction grating. The use of this grating easily allows the determination of the topological charges included in each of the two circular polarization components of the incident beam.
Jeffrey A. Davis +5 more
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FEBS Open Bio, EarlyView.Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
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IEEE Photonics Journal, 2014 Radially polarized orbital angular momentum (OAM) beams could be applied in optical manipulation and optical microscopy. An integrated OAM beam emitter with radially polarized radiation is proposed on shallow-ridge silicon microring with azimuthally ...
Rui Li +5 more
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Confocal microscopy with a radially polarized focused beam
Optics Express, 2018 Rigorous vectorial focusing theory is used to study the imaging of small adjacent particles with a confocal laser scanning system. We consider radially polarized illumination with an optimized amplitude distribution and an annular lens to obtain a narrower distribution of the longitudinal component of the field in focus. A polarization convertor at the
Meng, P. (author) +2 more
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