Results 31 to 40 of about 6,802,009 (374)

Optimization of the diffraction efficiency in photorefractive crystals [PDF]

, 2017
The aim of this work is to study and to optimize the diffraction efficiency in sillenite BTO crystals. A theoretical analysis, where the effects of coupling beams are significant,is carried on. In addition, non-mobile transmission gratings are considered.
Arias Hernández, Néstor Alonso, Molina Prado, Martha Lucia, Tebaldi, Myriam Cristina, Villamizar Amado, Astrid Lorena   +3 more
core   +2 more sources

A Facile Fabrication Route of Poly(Ethylene Glycol Phenyl Ether Acrylate) Photopolymers with Efficient Optical Response for Holographic Storage

Crystals, 2020
A series of photopolymers based on ethylene glycol phenyl ethyl arylate (EGPEA) monomers and poly(methyl methacrylate) (PMMA) matrix with varying initiator concentrations and sample thicknesses have been synthesized and their optical performance ...
Fang-Yong Lee, Xin-Jin Wang, Wei-Hung Su, Tzu-Chien Hsu   +3 more
doaj   +1 more source

Spectral and angular dependence of the efficiency of a two-layer and single-relief sawtooth microstructure [PDF]

Компьютерная оптика, 2018
Spectral and angular dependences of the diffraction efficiency of two-layer single-relief sawtooth microstructures are analyzed. The microstructures are assembled from optical plastics and new brands of special optical glass.
Grigoriy Greisukh, Viktor Danilov, Artyom Antonov, Sergei Stepanov, Boris Usievich   +4 more
doaj   +1 more source

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

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

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

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