Results 21 to 30 of about 4,135,283 (192)

Holographic Recording of Unslanted Volume Transmission Gratings in Acrylamide/Propargyl Acrylate Hydrogel Layers: Towards Nucleic Acids Biosensing

Gels, 2023
The role of volume hydrogel holographic gratings as optical transducers in sensor devices for point-of-care applications is increasing due to their ability to be functionalized for achieving enhanced selectivity.
Paola Zezza, María Isabel Lucío, Izabela Naydenova, María-José Bañuls, Ángel Maquieira   +4 more
doaj   +1 more source

Conditions for Minimizing the Computational Complexity of the RCWA Calculation of the Diffraction Efficiency of Sawtooth Two-Layer Double-Relief Microstructures

Photonics, 2023
In this study, novel recommendations are presented and substantiated for selecting the number of modes and optical thicknesses of flat lattice slabs that make up microreliefs, which minimize the computational complexity of the rigorous coupled-wave ...
Grigoriy I. Greisukh, Artem I. Antonov, Evgeniy G. Ezhov, Viktor A. Danilov, Boris A. Usievich   +4 more
doaj   +1 more source

Design of a Hybrid Refractive/Diffractive Lens System for Broadband UV

Sensors, 2022
Traditional broadband UV optical designs often have complex structural problems and cannot meet the current requirements of light and miniaturization.
Yuan Hu, Jiaqi Huo, Binpeng Cheng
doaj   +1 more source

Efficient diffractive phase optics for electrons [PDF]

New 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 promise for the development of new imaging and spectroscopy techniques for the study of materials ...
Tyler R Harvey, Jordan S Pierce, Amit K Agrawal, Peter Ercius, Martin Linck, Benjamin J McMorran   +5 more
openaire   +2 more sources

Comparative analysis of the Fresnel lens and the kinoform lens [PDF]

Компьютерная оптика, 2018
Based on a unified approach in the ray approximation, the focusing properties of Fresnel lenses and kinoform lenses are considered and compared. Particular attention is paid to the energy efficiency, chromatic focal shift and resolving power of these ...
Grigoriy Greisukh, Sergei Stepanov, Artyom Ivanovich Antonov   +2 more
doaj   +1 more source

The Development Progress of Surface Structure Diffraction Gratings: From Manufacturing Technology to Spectroscopic Applications

Applied Sciences, 2022
The high-precision diffraction grating is an important chromatic dispersion component that has been widely used in many fields, including laser beam combining, chirped pulse compression, spectroscopy, among others.
Ye Wang, Xiuhua Fu, Yongyi Chen, Li Qin, Yongqiang Ning, Lijun Wang   +5 more
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

Verification of Polarization Matching on the Hologram Recording Plane for the Implementation of an Optimized Digital Hologram Printing System

Frontiers in Physics, 2022
Conventional studies on digital hologram printer have mainly been conducted on image generation and reconstruction such as multi-view image generation method, computer-generated hologram (CGH) and a method of displaying a wave-front for a 3D object ...
Leehwan Hwang, Jongho Jeong, Cheolyoung Go, Philippe Gentet, Jungho Kim, Soonchul Kwon, Seunghyun Lee   +6 more
doaj   +1 more source

Augmented Reality Vector Light Field Display with Large Viewing Distance Based on Pixelated Multilevel Blazed Gratings

Photonics, 2021
Glasses-free augmented reality (AR) 3D display has attracted great interest in its ability to merge virtual 3D objects with real scenes naturally, without the aid of any wearable devices.
Jiacheng Shi, Jianyu Hua, Fengbin Zhou, Min Yang, Wen Qiao   +4 more
doaj   +1 more source

Dynamic holographic interferometry using a Bi12SiO20 photorefractive crystal and monomode optical fibres [PDF]

, 1993
Dynamic holographic interferometry using polarization preserving opticai fibres as light guides and incorporating a photorefractive Bi12SiO20 (BSO) crystal as the recording medium is described.
Potter, J, Spooncer, RC, Hobson, PR
core   +6 more sources