Results 11 to 20 of about 4,135,283 (192)
Spherical wave diffraction by a rational wedge [PDF]
, 1986 In this paper we derive a new expression for the point source Green's function for the reduced wave equation, valid in an angular sector, whoseangle is equal to a rational multiple of . This Green's function is used to find new expressions for the field
Rawlins, A D
core +6 more sources
Approaches to the algorithmization of the rigorous coupled-wave analysis [PDF]
Компьютерная оптика, 2019 Coefficients required for the algorithmization and implementation of the rigorous coupled-waves analysis are derived for a Fourier series expansion of the permittivity of a linear-sawtooth relief with positive tangent of the working surface angle and ...
Artyom Antonov +2 more
doaj +1 more source
Highly Efficient Double-Layer Diffraction Microstructures Based on New Plastics and Molded Glasses
Photonics, 2021 Within the framework of rigorous diffraction theory, the maximum possible incidence angles of radiation on two-layer sawtooth relief-phase microstructures in the visible (0.4 ≤ λ ≤ 0.7 μm) spectral range are compared.
Grigoriy I. Greisukh +4 more
doaj +1 more source
Photonics, 2023 Diffractive optical elements (DOEs) fundamentally provide the possibility to simultaneously utilize multiple orders for different imaging functions within a system.
Lia Schmidt +2 more
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Crystals, 2022 We present a process flow for wafer-scale fabrication of a surface phase grating with sub-micron feature sizes from a single semiconductor material. We demonstrate this technique using a 110-oriented GaP semiconductor wafer with second-order nonlinearity
Mohammad Bashirpour +3 more
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Cylindrical wave diffraction by a rational wedge [PDF]
, 1986 In this paper new expressions for the field produced by the diffraction of a cylindrical wave source by a wedge, whose angle can be expressed as a rational multiple of are given.
Rawlins, A D
core +8 more sources
Optimization of parameters of multilayer diffraction gratings using needle variations
Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2022 Background. The purpose of the work is to optimize the diffraction efficiency in the first diffraction order of a multilayer diffraction grating. Material and methods. Needle variations are used to optimize diffraction efficiency.
V.Yu. Martynova +2 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
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 ...
He, Qiong +5 more
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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 +3 more
doaj +1 more source