Results 31 to 40 of about 390,346 (343)
Band-edge-induced Bragg diffraction in two-dimensional photonic crystals [PDF]
, 2006 Two-dimensional photonic crystals composed of two orthogonal volume diffraction gratings have been photogenerated in photopolymers. When the read beam is set at the Bragg angle, the diffraction efficiency of the transmission grating is strongly enhanced ...
Chevallier, Raymond +5 more
core +2 more sources
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 +6 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 +4 more
doaj +1 more source
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 +4 more
doaj +1 more source
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
Electromagnetically Induced Grating of Surface Polaritons via Coherent Population Oscillation
Photonics, 2022 We propose a scheme to study the electromagnetically induced grating (EIG) of surface polaritons (SPs) in a negative index metamaterial/rare-earth-ion-doped crystal interface waveguide system, based on coherent population oscillation (CPO) modulating by ...
Yu Duan, Shengyan Liu, Chaohua Tan
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 +3 more
doaj +1 more source
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
Journal of Synchrotron RadiationWe have developed a new process for the production of ultra-precise variable line spacing (VLS) lamellar diffraction gratings through nanofabrication. The process enables the fabrication of full-size X-ray gratings with sub-nanometre accuracy in groove ...
Dmitriy Voronov +7 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 +4 more
openaire +3 more sources