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About 10,000 papers for “Diffraction”

Diffraction to De-Diffraction

Vladimir F. Tamari · ArXiv.org · 2003

De-diffraction (DD), a new procedure to totally cancel diffraction effects from wave-fields is presented, whereby the full field from an aperture is utilized and a truncated geometrical field is obtained, allowing infinitely sharp focusing and non-diverging beams. This is done by reversing a diffracted wave-fields' direction. The method is derived from the wave equation and demonstrated in the case of Kirchhoff's integral. An elementary bow-wavelet is described and the DD process is related to quantum and relativity theories.

Cited by 0Open access

Diffraction and diffraction radiation

Борис М. Болотовский, Evgenii A. Galst'yan · Uspekhi Fizicheskih Nauk · 2000

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Cited by 27Open access

Diffraction from excitonic diffraction grating

Yury V. Kapitonov, P. Yu. Shapochkin, Yu. V. Petrov et al. · Journal of Physics Conference Series · 2019

Abstract In this paper we consider two methods for the theoretical modelling of the reflection and diffraction spectra from an excitonic diffraction grating made from a quantum well with spatial modulation of the exciton resonance. The modelling was performed in the single-scattering approximation, and by the step-by-step approximations of the exact solution of Maxwell’s equations. The expressions are obtained for the modulation of the inhomogeneous broadening of the exciton resonance. Theoretical results are compared with the experimental data for the quantum well grown on an ion irradiated substrate, and for a quantum well irradiated with ions after growth.

Cited by 1Open access

Fresnel Diffraction and Fraunhofer Diffraction

Elsevier eBooks · 2013

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Diffraction

Martin T. Dove · 2003

Abstract Having explored many of the principles of crystal structures, we now need to consider how crystal structures can be determined. Inevitably this information is obtained by the use of beams of radiation. The strict requirement is that the wavelength of the radiation will need to be smaller than typical interatomic distances if there is to be adequate resolution in the reconstructed image of the atoms in the crystal. There are several candidate beams, such as electromagnetic radiation in the X-ray spectrum, beams of electrons, or beams of neutrons. Here we meet wave–particle duality with a vengeance.

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Diffraction

The Physics Video Demonstration Database (Cornell University)

This activity from the Exploratorium provides an introduction to the diffraction of light which indicates its wavelike properties. Two pencils are used to create a slit through which a flashlight bulb or candle’s light is examined. The site contains an explanation of the observed interference patterns, additional materials that can be experimented with, and an extension activity. This activity is part of Exploratorium's Science Snacks series.

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diffraction

Seung Ho Choi, Sung June Kim, Kyung Min Byun · 2009

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Diffraction

Charles E. Lyman · Microscopy Today · 2012

This year marks the 100th anniversary of the discovery of X-ray diffraction and the 85th anniversary of electron diffraction (see Microscopy Pioneers). For most of the time since their introduction, microscopists have known these two techniques as the primary phase identification methods used in conjunction with various microscopies. However, these two diffraction methods also have played enormous roles in understanding the structure of matter, as well as the nature of both X rays and electrons.

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diffraction *

Lu Xian-hai, Du Ying-chao, Huang Wen-hui et al. · 2016

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Diffraction

J. Scott Tyo, Andrey Alenin · SPIE eBooks · 2015

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Diffraction

SpringerReference · 2012

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Diffraction

2012

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Diffraction

2007

This chapter contains sections titled: Introduction Diffraction by Periodic Structures Single-Slit Diffraction Use of Lenses Viewing Diffraction Patterns with the Eye Styles of Diffraction Analysis Grating Equation Spatial Frequency Grating Example Off-Axis Grating Equation Diffraction by a Sinusoidal Grating Conclusions References

Cited by 1

Diffraction

Geoffrey Brooker · 1992

Abstract In this chapter we introduce diffraction using the concept of Huygens secondary sources. At the same time, we take the attitude that the whole subject must be grounded on Maxwell’s equations. We do what we can at our level of treatment to make the connection, and look critically at the customary assumptions. The whole subject of diffraction is, of course, itself founded on an understanding of simple cases of interference, such as the Young slits. It is assumed that the reader has acquired this foundation from a more elementary treatment of optics.

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Diffraction

D. R. Tilley · Waves · 1974

Any wave is diffracted by obstacles in its path. For example, figure 3.1 shows the optical diffraction pattern produced by a small hole in an opaque screen. Because of its wave character, the light is spread out after passing through the hole. Although diffraction is a general property of all waves, diffraction of light is the easiest to observe as well as the most important in practice, and we shall concentrate on optical examples.

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Diffraction

Jenny Magnes, Juan M Merlo-Ramírez · 2025

This chapter introduces the theoretical framework required to describe the diffraction of waves. We begin by presenting the Huygens–Fresnel principle, which interprets every point on a wavefront as a secondary source of spherical wavelets. Building on the general wave equation developed previously, we derive mathematical models for diffraction using the scalar formulation. Next, we develop analytical approaches such as Kirchhoff’s integral and the Fresnel–Kirchhoff diffraction formula and applied to canonical problems, including circular apertures and wires. We conclude by discussing near-field (Fresnel) and far-field (Fraunhofer) regimes, as well as the Fourier transform perspective that underpins modern diffraction analysis that is the core of this book.

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