Results 41 to 50 of about 378,095 (341)

Form-faсtor of the holograms of composite images [PDF]

Компьютерная оптика, 2018
This article is a follow-on study of the influence of the form-factor of holograms on their optimal characteristics, such as the optimal exposure, subject to a known visibility distribution, and the maximum achievable values of the average diffraction ...
Sergey Shoydin, Aleksandr Trifanov
doaj   +1 more source

Optically Tunable Diffraction Efficiency in Reflection Grating Written in Photomobile Polymers

Photonics, 2022
In this work, we report the fabrication and optical characterization of a one-dimensional reflection holographic volume phase grating recorded in a recently developed holographic photomobile composite polymer mixture.
Riccardo Castagna, Andrea Di Donato, Oriano Francescangeli, Daniele Eugenio Lucchetta   +3 more
doaj   +1 more source

Highly efficient acousto-optic diffraction in Sn_2P_2S_6 crystals [PDF]

Applied Optics, 2007
5 pages, 1 ...
Oksana Mys, A. A. Grabar, I. M. Stoika, Rostyslav Vlokh, I. Yu. Martynyuk-Lototska, Yu. M. Vysochanskii   +5 more
openaire   +4 more sources

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

Photonics, 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

Photolithographic fabrication method of computer-generated holographic interferograms [PDF]

, 1989
We consider the fabrication of high-quality interferogram-type diffractive optical elements with conventional photolithographic techniques and compare the results with those achievable with electron-beam lithography. The fringes associated with the phase
Byckling, Eero, Fagerholm, Juha, Heikonen, Jussi, Kajanto, Markus, Salin, Arto, Turunen, Jari, Vasara, Antti   +6 more
core   +1 more source

Design and fabrication of blazed gratings for a waveguide-type head mounted display [PDF]

, 2020
In a waveguide-type display for augmented reality, the image is injected in the waveguide and extracted in front of the eye appearing superimposed on the real-world scene.
Cuypers, Dieter, Mattelin, Marie-Aline, Missinne, Jeroen, Radosavljevic, Ana, Van Steenberge, Geert   +4 more
core   +1 more source

Methodology for determining temperature dependences of the diffraction efficiency of two-layer two-relief microstructures in the framework of a rigorous coupled-wave analysis

Компьютерная оптика
Aiming to calculate the diffraction efficiency of diffractive optical elements with a two-layer microstructure and two internal sawtooth reliefs within the framework of the rigorous electromagnetic theory of diffraction, we propose an approach that ...
A.I. Antonov, G.I. Greisukh
doaj   +1 more source

ANALYSIS OF THE DIFFRACTION EFFICIENCY OF ONE-DIMENSIONAL BINARY DIFFRACTION GRATING BY THE PLANE WAVE EXPANSION METHOD (THE TE-POLARIZATION CASE)

Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2020
Background. The aim of this work is to study the diffraction of an electromagnetic TE-wave by one-dimensional cylindrical diffraction gratings. Material and methods.
A. A. Tsupak
doaj   +1 more source

Optimal Control of Passive Cascaded Liquid Crystal Polarization Gratings

Applied Sciences, 2023
The incidence angle of a beam entering a liquid crystal variable retarder (LCVR) and the liquid crystal polarization grating (LCPG) is greater when the LCPG is utilized in the quadrature cascade, which reduces the diffraction efficiency.
Huan Qin, Zhuang Liu, Qidong Wang, Qiang Fu   +3 more
doaj   +1 more source

Phase gratings with tunable diffraction efficiency

Optics Express, 2016
We present a new principle for tuning the diffraction efficiency of an optical grating and its implementation in a micro-optical device. The overlap of two phase gratings is used to vary the effective phase shift and hence the diffraction efficiency.
Moritz Stürmer, Matthias C. Wapler, Jana Schmitt, Ulrike Wallrabe, Friedemann Völklein   +4 more
openaire   +4 more sources