Results 11 to 20 of about 4,907,875 (249)

Multi-wavelength optical pickup with diffractive optical elements

open access: yes, 2022
S.2437-2453A novel, to our knowledge, multi-wavelength diffractive optical pickup is presented. The pickup enables multi-focus imaging and increases the data transfer rate considerably. Parallel reading of two or more memory layers is possible.
Pawlowski, E.   +5 more
core   +1 more source

A theoretical framework for general design of two-materials composed diffractive fresnel lens

open access: yesScientific Reports, 2021
Near 100% of diffractive efficiency for diffractive optical elements (DOEs) is one of the most required optical performances in broadband imaging applications.
Ming-Yen Lin   +3 more
doaj   +1 more source

Antireflection-coated diffractive optical elements fabricated by thin-film deposition

open access: yes, 2022
S.3537-46The use of thin-film deposition in the fabrication of antireflection- coated diffractive optical elements is discussed. The antireflection coatings for these diffractive elements are optimized on the basis of an angular spectrum approach and the
Pawlowski, E., Kuhlow, B.
core   +1 more source

Spectral splitting and concentration of broadband light using neural networks

open access: yesAPL Photonics, 2021
Compact photonic elements that control both the diffraction and interference of light offer superior performance at ultra-compact dimensions. Unlike conventional optical structures, these diffractive optical elements can provide simultaneous control of ...
Alim Yolalmaz, Emre Yüce
doaj   +1 more source

Roller nanoimprint lithography for low-cost nanoscale random lattice diffractive optical elements

open access: yesAIP Advances, 2020
In this paper, effective fabrication of high-resolution diffractive optical elements on a polymer substrate is demonstrated using roller nanoimprint lithography.
Man Zhang   +5 more
doaj   +1 more source

Laser smoothing of binary gratings and multilevel etched structures in fused silica [PDF]

open access: yes, 2010
We describe a promising approach to the processing of micro-optical components, where CO2 laser irradiation in raster scan is used to generate localized surface melting of binary or multilevel structures on silica, fabricated by conventional reactive-ion
Wlodarczyk, Krystian Lukasz   +4 more
core   +1 more source

Thickness variation of self-processing acrylamide-based photopolymer and reflection holography [PDF]

open access: yes, 2000
There are many types of holographic recording material. The acrylamide-based recording material examined here has one significant advantage: it is self-processing.
Lawrence, Justin R.   +6 more
core   +1 more source

Design and development of Binary Diffractive Germanium Lens by thin film deposition [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2015
Higher Institute for Applied Sciences and Technology Damascus, Syria The design and development of infrared (λ: [8]–[12] μm) binary diffractive germanium lens (BDGL) by two - steps thin film deposition (Physical vapor deposition (PVD) technique) is ...
Alshami M., Wabby A., Mousselly M. F.
doaj   +1 more source

Polarization converter for higher-order laser beams based on the use of forming binary diffractive optical elements as beam splitter

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
We propose a new approach to generating a pair of initial beams for a polarization converter that operates by summing up two opposite-sign circularly polarized beams.
S. V. Karpeev   +4 more
doaj   +3 more sources

Metamaterials for light rays: ray optics without wave-optical analog in the ray-optics limit [PDF]

open access: yes, 2009
Volumes of sub-wavelength electromagnetic elements can act like homogeneous materials: metamaterials. In analogy, sheets of optical elements such as prisms can act ray-optically like homogeneous sheet materials.
Hamilton, A.C., Courtial, J.
core   +1 more source

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