Results 11 to 20 of about 5,049 (222)
Expansion of Image Space in Enhanced-NA Fresnel Holographic Display
Applied Sciences, 2022 The enhanced-NA Fresnel hologram reconstructs a holographic image at a viewing angle larger than the diffraction angle of a hologram pixel. The image space is limited by the bandwidth of a digital hologram.
Byung Gyu Chae
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Comparative analysis of the Fresnel lens and the kinoform lens [PDF]
Компьютерная оптика, 2018 Based on a unified approach in the ray approximation, the focusing properties of Fresnel lenses and kinoform lenses are considered and compared. Particular attention is paid to the energy efficiency, chromatic focal shift and resolving power of these ...
Grigoriy Greisukh +2 more
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Modeling Several Optical Components Using Scalar Diffraction Theory
Applied Sciences, 2022 Compound systems are generally treated by geometrical optics, for instance, through the Gauss’ formalism. The objective is to simplify the process of image formation. However, this formalism does not include the wave characteristics of light and boundary
Habib Hamam
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High-Flexibility Control of Structured Light with Combined Adaptive Optical Systems
Photonics, 2022 Combining the specific advantages of high-resolution liquid-crystal-on-silicon spatial light modulators (LCoS-SLMs) and reflective or refractive micro-electro-mechanical systems (MEMS) presents new prospects for the generation of structured light fields.
Ruediger Grunwald +6 more
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Topological charge of a superposition of two Bessel-Gaussian beams [PDF]
Компьютерная оптика, 2021 Here we show theoretically that a superposition of two Bessel-Gaussian (BG) beams with different topological charges (TC) and different scaling factors (radial components of the wave vectors) has the TC equal to that of the BG beam with the larger ...
V.V. Kotlyar, A.A. Kovalev
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Fresnel diffraction lithography
Acta Physica Sinica, 2023 Lithography plays a vital important role in modern information technologies. Patterning on a nanoscale in a handy way is highly desired for both scientific and industrial purposes. In this work, we propose a convenient nanolithography method based on Fresnel diffraction patterns.
Zhong-Jun Jiang +6 more
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A Light-Ray Approach to Fractional Fourier Optics
Fractal and Fractional, 2023 A light ray in space is characterized by two vectors: (i) a transverse spatial vector associated with the point where the ray intersects a given spherical cap; (ii) an angular-frequency vector which defines the ray direction of propagation. Given a light
Éric Fogret, Pierre Pellat-Finet
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3D imaging using scanning diffractometry
Scientific Reports, 2021 Imaging of cells is a challenging problem as they do not appreciably change the intensity of the illuminating light. Interferometry-based methods to do this task suffer from high sensitivity to environmental vibrations.
Morteza J. Siavashani +6 more
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International Journal of Antennas and Propagation, 2008 This paper presented a theoretical and numerical assessment for nonidentical segmented exponential- (NISE-) convex and NISE-concave serrated plane CATRs by changing number of serrations.
T. Venkata Rama Krishna +2 more
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Fresnel Diffraction in Deuterium [PDF]
Annals of Physics, 1971 Abstract In Glauber's theory of high energy scattering the wavefunction inside the nucleus is given by geometrical optics. The theory is extended to lower energies by incorporating the effects due to Fresnel diffraction, and applied to elastic and inelastic scattering off deuterium.
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