Results 41 to 50 of about 6,802,009 (374)

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

Large bandwidth, highly efficient optical gratings through high index materials [PDF]

, 2008
We analyze the diffraction characteristics of dielectric gratings that feature a high index grating layer, and devise, through rigorous numerical calculations, large bandwidth, highly efficient, high dispersion dielectric gratings in reflection ...
Baldry, Clausnitzer, Clausnitzer, Clausnitzer, Ebizuka, Gibson, H. L. Offerhaus, Helmut Rathgen, Kogelnik, Limpert, Liu, Marciante, Moharam, Nguyen, Nishii, Néauport, Rhee, Tamura   +17 more
core   +5 more sources

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

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

Analysis of diffraction efficiency of phase gratings in dependence of duty cycle and depth

Journal of Physics: Conference Series, 2019
The analysis of dependence of diffraction efficiency on duty cycle and modulation depth of phase gratings with rectangular and Gaussian profile was performed by means of specially designed program.
A. Meshalkin, V. Podlipnov, A. Ustinov, E. Achimova   +3 more
semanticscholar   +1 more source

Study of Optical, Electrophotographic and Holographic Parameters of As-Se Condensates from the Prehistory of the Original Bulk Materials

East European Journal of Physics
The results of a study of the optical, electrophotographic and holographic parameters of As-Se condensates from the prehistory of the original bulk materials are presented.
Sharifa B. Utamuradova, Zakirjan T. Azamatov, A.I. Popov, Mira R. Bekchanova, Murodjon A. Yuldoshev, Abror B. Bakhromov   +5 more
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

Analysis of the influence of antireflective coatings on the diffraction efficiency of diffractive optical elements

Optics Express, 2021
Diffractive optical elements (DOEs) may be used as a single optical component with dedicated functionality (e.g. focusing), or as one of the elements in complex hybrid optical systems to reduce the number of the elements and improve imaging quality. It is desirable to cover DOE’s
Grzegorz Fluder, Andrzej Kowalik, Anna Rojek, Artur Sobczyk, Zdzisław Choromański, Jerzy Krężel, Michał Józwik   +6 more
openaire   +2 more sources

Integral diffraction efficiency model for multilayer diffractive optical elements with wide angles of incidence in case of polychromatic light.

Optics Express, 2019
Oblique incidence is the normal working mode for diffractive optical elements (DOEs). The diffraction efficiency is very sensitive to the angle of incidence for multilayer diffractive optical elements (MLDOEs).
S. Mao, Lidong Zhao, Jianlin Zhao
semanticscholar   +1 more source