Results 31 to 40 of about 11,755 (309)

Far-field diffraction of linear chirped gratings [PDF]

open access: yes, 2018
We analyze the far-field diffraction pattern produced by linear spatial chirped gratings. An intuitive analytical interpretation of the generated diffraction orders is proposed for gratings with linear variation of the period and linear variation of the ...
Buencuerpo, Jeronimo   +7 more
core   +1 more source

Controlling multiple diffraction with quasiperiodic gratings [PDF]

open access: yes, 2021
Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.Complex diffraction patterns are formed by sophisticated diffraction gratings. However, the methods of synthesizing of such gratings are complicated and resource intensive.
A, M Vyunishev   +2 more
core   +1 more source

Efficient diffractive phase optics for electrons

open access: yesNew Journal of Physics, 2014
Electron diffraction gratings can be used to imprint well-defined phase structure onto an electron beam. For example, diffraction gratings have been used to prepare electron beams with unique phase dislocations, such as electron vortex beams, which hold ...
Tyler R Harvey   +5 more
doaj   +1 more source

Heptagonal quasicrystals: Construction of 2D lattices and demonstrations using laser pointers – Concluding part

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2023
Photographic slides of an aperiodic heptagonal tiling were used as two-dimensional diffraction gratings (as a standard approach) to describe and demonstrate the basic properties of dodecagonal quasicrystals.
Vladimir M. Petruševski   +1 more
doaj   +1 more source

On a fast integral equation method for diffraction gratings [PDF]

open access: yes, 2006
The integral equation method for the simulation of the diffraction by optical gratings is an efficient numerical tool if profile gratings determined by simple cross-section curves are considered.
Kleemann, Bernd   +3 more
core   +1 more source

Diffraction properties of azimuthally symmetric gratings in a hollow circular dielectric waveguide

open access: yesResults in Physics, 2020
Diffraction gratings can be used in cavities of terahertz lasers for generating wave beams with special polarization. Adequate using of such gratings needs preliminary theoretical investigation of their diffraction properties.
Jihong Cui   +5 more
doaj   +1 more source

Properties of Holographic Elements Based on Periodic Structures in a Wide Range of Angles of Incidence

open access: yesPhotonics, 2021
An experimental study is carried out on the diffraction and angular selectivity properties of gratings for a wide range of angles of incidence in three-dimensional space.
Nadezhda Vorzobova, Pavel Sokolov
doaj   +1 more source

Explicit error bounds for the α-quasi-periodic Helmholtz problem [PDF]

open access: yes, 2013
This paper considers a finite element approach to modeling electromagnetic waves in a periodic diffraction grating. In particular, an a priori error estimate associated with the α-quasi-periodic transformation is derived.
Mulholland, Anthony   +2 more
core   +1 more source

Recording of the Multiplexed Bragg Diffraction Gratings for Waveguides Using Phase Mask

open access: yesPhotonics, 2020
The paper describes a stable method for multiplexed recording of the Bragg diffraction gratings for waveguides using a phase mask. Diffraction waveguides in this experiment were made of photo-thermo-refractive glass.
Maria Shishova   +3 more
doaj   +1 more source

RETRACTED: Hu, H.; Bayanheshig. Exploration of a Flexible Metasurface for Strain Sensors: A Perspective from 2D Grating Fabrication to Spectral Characterization. Appl. Sci. 2022, 12, 10007

open access: yesApplied Sciences
The journal retracts and remove the article “Exploration of a Flexible Metasurface for Strain Sensors: A Perspective from 2D Grating Fabrication to Spectral Characterization” [...]
Hao Hu, Bayanheshig
doaj   +1 more source

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