Diffraction

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a screen by diffraction from a square aperture]] Diffraction refers to various phenomena which occur when a wave encounters an obstacle. Italian scientist Francesco Maria Grimaldi coined the word "diffraction" and was the first to record accurate observations of the phenomenon in 1665. (Wikipedia.org)






Conferences related to Diffraction

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2016 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting

This is the annual symposium for the IEEE Antennas and Propagation Society, and it is joint with the US National Committee of URSI's Radio Science Meeting.


2013 13th Mediterranean Microwave Symposium (MMS)

2013 MMS will include distinguished keynote speakers, parallel oral presentations and poster sessions. Topics cover state-of-the art as well as current progress and recent developments in several emerging topics related to RF, microwave engineering and applications.

  • 2011 Mediterranean Microwave Symposium (MMS)

    MMS 2011 will provide an international forum for reporting progress and recent developments in RF and microwave and in many other related topics theory and applications . MMS'2011 will consist of technical and invited sessions and keynote and tutorial sessions covering the state-of-the art of several hot topics in RF and microwave engineering and technology.

  • 2010 10th Mediterranean Microwave Symposium (MMS)

    MMS2010 will provide an international forum for reporting progress and recent developments in RF and microwave theory and applications. Suggested topics are listed below, but consideration will be given to papers on other subjects.

  • 2009 Mediterranean Microwave Symposium (MMS)

    MMS 2005 will provide an international forum for reporting progress and recent developments in RF and microwave theory and applications. Suggested topics are listed below, but consideration will be given to papers on other subjects. Suggested Topics : 1. Propagation, Scattering and diffraction 2. Microwave and Millimeter-Wave Circuits. 3. Photonics, non linear optics and devices 4. Microwaves and millimeterwave devices CAD 5. RF and Wireless Technology and Applications 6. Interconnects 7. W


2013 XVIIIth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)

Theoretical aspects of electrodynamicsWaveguide and photonic crystal structuresScattering and diffractionInverse problems and synthesisPropagation in complex mediaAntennas and antenna arraysNumerical methods in electrodynamicsAcoustics: theory and applications


Days on Diffraction 2013 (DD)

Mathematical aspects of wave propagation, Asymptotic techniques, Scattering and diffraction, Electromagnetics, Sound propagation and vibration, Elastic waves and seismology, Nonlinear waves, Microwave and quantum waveguides, Inverse problems, Numerical approaches, Non-stationary phenomena


2010 URSI International Symposium on Electromagnetic Theory (EMTS 2010)

all aspects of electromagnetic theory and its applications



Periodicals related to Diffraction

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Antennas and Propagation, IEEE Transactions on

Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.


Antennas and Wireless Propagation Letters, IEEE

IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.


Applied Superconductivity, IEEE Transactions on

Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission


Biomedical Engineering, IEEE Transactions on

Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.


Device and Materials Reliability, IEEE Transactions on

Provides leading edge information that is critical to the creation of reliable electronic devices and materials, and a focus for interdisciplinary communication in the state of the art of reliability of electronic devices, and the materials used in their manufacture. It focuses on the reliability of electronic, optical, and magnetic devices, and microsystems; the materials and processes used in the ...


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Most published Xplore authors for Diffraction

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Xplore Articles related to Diffraction

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Dynamical Diffraction of Millimeter Waves on Space-Periodic Media

1994 24th European Microwave Conference, 1994

The problem of microwave diffraction on three-dimensional grating has been solved in incident spherical wave approximation. The results of experimental investigations of angular distribution under 2-mm wave diffraction in Laue geometry are given. The dependence of transmitted and diffracted beams intensities from the grating thickness has been studied. The received experimental data are compared with theoretical calculations.


Digital Diffractive Optics: Analytic Type

Applied Digital Optics: From Micro-optics to Nanophotonics, None

This chapter contains sections titled:Analytic and Numeric Digital DiffractivesThe Notion of Diffraction OrdersDiffraction GratingsDiffractive Optical ElementsDiffractive Interferogram Lenses


Diffractive analysis of backscatter from wave-crest-like objects

IEEE International Geoscience and Remote Sensing Symposium, 2002

The backscattering from surface profiles approximating the crests of steep water waves has been modeled using diffraction theory. The diffractive backscattering from rounded-apex wedges is due to diffraction from curvature discontinuities, and can be predicted with apex radii as small as one-third of a wavelength using standard diffraction coefficients provided that heuristic corrections are applied to account for the small ...


ITD formulation for the currents on a plane angular sector

IEEE Transactions on Antennas and Propagation, 1998

Approximate high-frequency expressions for the currents induced on a perfectly conducting plane angular sector are derived on the basis of the incremental theory of diffraction (ITD). These currents are represented in terms of those predicted by physical optics (PO) plus fringe contributions excited by singly and doubly diffracted (DD) rays at the two edges of the angular sector. For each ...


Ultrafast switching of hard X-rays

2012 Conference on Lasers and Electro-Optics (CLEO), 2012

A 100 ps synchrotron pulse of hard X-rays is shorted to few picoseconds by exploiting coherent phonon dynamics in a thin metallic SrRuO3layer. A first pump-probe experiment with the shortened X-ray pulse is presented.


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Educational Resources on Diffraction

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IEEE-USA E-Books

  • Dynamical Diffraction of Millimeter Waves on Space-Periodic Media

    The problem of microwave diffraction on three-dimensional grating has been solved in incident spherical wave approximation. The results of experimental investigations of angular distribution under 2-mm wave diffraction in Laue geometry are given. The dependence of transmitted and diffracted beams intensities from the grating thickness has been studied. The received experimental data are compared with theoretical calculations.

  • Digital Diffractive Optics: Analytic Type

    This chapter contains sections titled:Analytic and Numeric Digital DiffractivesThe Notion of Diffraction OrdersDiffraction GratingsDiffractive Optical ElementsDiffractive Interferogram Lenses

  • Diffractive analysis of backscatter from wave-crest-like objects

    The backscattering from surface profiles approximating the crests of steep water waves has been modeled using diffraction theory. The diffractive backscattering from rounded-apex wedges is due to diffraction from curvature discontinuities, and can be predicted with apex radii as small as one-third of a wavelength using standard diffraction coefficients provided that heuristic corrections are applied to account for the small radii and finite surface conductivity. The same diffraction theory can also be used to model the backscattering from surfaces that approximate the early formation of a jet on a breaking crest, although accuracy is a bit poorer when the crest-feature radii are one-third wavelength. This confirms that the limitations found in a previous study are due to the limitations of the model itself, and not due to the averaging of surface curvatures that were needed to allow the application of the model.

  • ITD formulation for the currents on a plane angular sector

    Approximate high-frequency expressions for the currents induced on a perfectly conducting plane angular sector are derived on the basis of the incremental theory of diffraction (ITD). These currents are represented in terms of those predicted by physical optics (PO) plus fringe contributions excited by singly and doubly diffracted (DD) rays at the two edges of the angular sector. For each of these two contributions, additional currents associated to vertex diffracted rays are introduced that provide continuity at the relevant shadow boundary lines. The transition region of DD rays is described by a transition function involving cylinder parabolic functions. The asymptotic solution presented is constructed in such a way to satisfy far from the vertex the expected edge singularities, which tend to be the same as those predicted by the exact solution of the half plane. Numerical results are compared with the exact solution of the same problem and with moments method results for scattering from polygonal plates.

  • Ultrafast switching of hard X-rays

    A 100 ps synchrotron pulse of hard X-rays is shorted to few picoseconds by exploiting coherent phonon dynamics in a thin metallic SrRuO3layer. A first pump-probe experiment with the shortened X-ray pulse is presented.

  • Phase synchronism possibility in optical fibers

    Optical fiber with Bragg grating inserted in fiber cladding is analyzed by means of volume integral equation method (VIE). Complex dispersion curves with two branches corresponding to positive and negative dispersion are simulated. The fiber parameters matched to phase synchronism conditions for weak Pockels- like nonlinearity are found.

  • Self-images of self-similar gratings

    Because the fractal density functions which represent Cantor and Sterpinski diffraction gratings can be build up in a similar way to the Walsh functions, that is through a multiplicative superposition of rectangular periodic components, they have self-images along the propagation direction. Here is shown this fact and an extension when we have Cantor gratings with equal dimension but different lacunarity is discussed.

  • Single-pixel coherent diffraction imaging with THz waves

    We propose and demonstrate single-pixel coherent diffraction imaging with ultrafast THz waves, whereby all the spatial frequency components processed by a spatial phase retarder are simultaneously measured by a fixed-location single-pixel detector.

  • Bistatic measurements of scattering from edges

    Measurements are presented of scattering from a 30- degree metal wedge and from a metal plate which has a thickness of 0.75 wavelength. The measurements were made on an indoor bistatic scattering range operating at 70 GHz. A comparison is made of the experimental data with computations based on Keller's geometrical theory of diffraction. For the wedge, there is good agreement of the measurements and computations over a range of scattering angles in which the scattered power changes by over 40 dB. For the plate, the measurements of scattering agree quite well with the computations based on single diffraction from each edge.

  • A micromachined vibratory sub-wavelength diffraction grating laser scanner

    A novel MEMS based in-plane vibratory sub-wavelength diffraction grating scanner is reported. Diffraction efficiency of more than 75%, optical scan angle of 13.7deg and scanning frequency of 20.35 kHz are experimentally achieved.



Standards related to Diffraction

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No standards are currently tagged "Diffraction"