Results 21 to 30 of about 42,732 (290)
Resonant diffraction gratings with polarization-dependent efficiencies [PDF]
EPJ Web of Conferences, 2020 Subwavelength-structures with different fill factors in the lateral dimensions result in unique phase shifts for the different polarization states of transmitted light. By using this additional degree of freedom for diffractive optical elements, we yield
Wüster Julian +3 more
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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
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Tailorable Elastomeric Grating With Tunable Groove Density Gradient
IEEE Photonics Journal, 2017 This paper describes a new method for fabrication of tailorable elastomeric gratings with tunable groove density gradients based on stretching of the grating sample in a direction perpendicular to the grating line within the grating surface.
Bin Sheng +6 more
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A nanofabricated, monolithic, path-separated electron interferometer [PDF]
, 2016 We report a self-aligned, monolithic electron interferometer, consisting of two 45 nm thick silicon layers separated by 20 $\mu$m. This interferometer was fabricated from a single crystal silicon cantilever on a transmission electron microscope grid by ...
Agarwal, Akshay +4 more
core +2 more sources
Efficient diffractive phase optics for electrons
New Journal of Physics, 2014 Electron diffraction gratings can be used to imprint well-defined phase structure onto an electron beam. For example, diffraction gratings have been used to prepare electron beams with unique phase dislocations, such as electron vortex beams, which hold ...
Tyler R Harvey +5 more
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Macedonian Journal of Chemistry and Chemical Engineering, 2023 Photographic slides of an aperiodic heptagonal tiling were used as two-dimensional diffraction gratings (as a standard approach) to describe and demonstrate the basic properties of dodecagonal quasicrystals.
Vladimir M. Petruševski +1 more
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Diffraction properties of azimuthally symmetric gratings in a hollow circular dielectric waveguide
Results in Physics, 2020 Diffraction gratings can be used in cavities of terahertz lasers for generating wave beams with special polarization. Adequate using of such gratings needs preliminary theoretical investigation of their diffraction properties.
Jihong Cui +5 more
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Demonstration of 3-port grating phase relations
, 2006 We experimentally demonstrate the phase relations of 3-port gratings by investigating 3-port coupled Fabry-Perot cavities. Two different gratings which have the same 1st order diffraction efficiency but differ substantially in their 2nd order diffraction
A. Bunkowski +12 more
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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
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