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

[{u'author_order': 1, u'affiliation': u'Institute of Nuclear Problems, Bobruiskaya, 11, Minsk, 220050, Belarus', u'full_name': u'A.A. Andriyanchik'}, {u'author_order': 2, u'affiliation': u'Institute of Nuclear Problems, Bobruiskaya, 11, Minsk, 220050, Belarus', u'full_name': u'A.N. Kaminsky'}] 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

[{u'author_order': 1, u'affiliation': u'Universit\xe9 de Strasbourg (UdS)', u'full_name': u'Bernard C. Kress'}, {u'author_order': 2, u'affiliation': u'Universit\xe9 de Strasbourg (UdS)', u'full_name': u'Patrick Meyrueis'}] 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

[{u'author_order': 1, u'affiliation': u'Sch. of Electr. & Comput. Eng., Oklahoma State Univ., Stillwater, OK, USA', u'full_name': u'J.C. West'}] 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

[{u'author_order': 1, u'affiliation': u'Dept. of Electr. Eng., Florence Univ., Italy', u'full_name': u'S. Maci'}, {u'author_order': 2, u'full_name': u'M. Albani'}, {u'author_order': 3, u'full_name': u'F. Capolino'}] 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

[{u'author_order': 1, u'affiliation': u'Institut f\xfcr Physik und Astronomie, Universit\xe4t Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam/Golm, Germany', u'full_name': u'Peter Gaal'}, {u'author_order': 2, u'affiliation': u'Institut f\xfcr Physik und Astronomie, Universit\xe4t Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam/Golm, Germany', u'full_name': u'Andr\xe9 Bojahr'}, {u'author_order': 3, u'affiliation': u'Institut f\xfcr Physik und Astronomie, Universit\xe4t Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam/Golm, Germany', u'full_name': u'Marc Herzog'}, {u'author_order': 4, u'affiliation': u'Helmholtz-Zentrum Berlin f\xfcr Materialien und Energie GmbH, Albert-Einstein-Str. 15, 12489 Berlin Germany', u'full_name': u'Yevgen Goldsteyn'}, {u'author_order': 5, u'affiliation': u'Helmholtz-Zentrum Berlin f\xfcr Materialien und Energie GmbH, Albert-Einstein-Str. 15, 12489 Berlin Germany', u'full_name': u'Roman Shayduk'}, {u'author_order': 6, u'affiliation': u'Institut f\xfcr Physik und Astronomie, Universit\xe4t Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam/Golm, Germany', u'full_name': u'Wolfram Leitenberger'}, {u'author_order': 7, u'affiliation': u'Helmholtz-Zentrum Berlin f\xfcr Materialien und Energie GmbH, Albert-Einstein-Str. 15, 12489 Berlin Germany', u'full_name': u'Hengameh Navirian'}, {u'author_order': 8, u'affiliation': u'European Synchrotron Radiation Facility (ESRF), 6 rue Jules Horowitz 38000 Grenoble, France', u'full_name': u'Dimitry Khakulin'}, {u'author_order': 9, u'affiliation': u'European Synchrotron Radiation Facility (ESRF), 6 rue Jules Horowitz 38000 Grenoble, France', u'full_name': u'Michael Wulff'}, {u'author_order': 10, u'affiliation': u'Institut f\xfcr Physik und Astronomie, Universit\xe4t Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam/Golm, Germany', u'full_name': u'Matias Bargheer'}] 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

  • Digital Diffractive Optics: Analytic Type

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

  • Digital Optics Modeling Techniques

    This chapter contains sections titled:Tools Based on Ray TracingScalar Diffraction Based PropagatorsBeam Propagation Modeling (BPM) MethodsNonparaxial Diffraction Regime IssuesRigorous Electromagnetic Modeling TechniquesDigital Optics Design and Modeling Tools Available TodayPractical Paraxial Numeric Modeling Examples

  • Digital Nano‐Optics

    This chapter contains sections titled:The Concept of ‘Nano’ in OpticsSub‐wavelength GratingsModeling Sub‐wavelength GratingsEngineering Effective Medium Optical ElementsForm Birefringence MaterialsGuided Mode Resonance GratingsSurface PlasmonicsPhotonic CrystalsOptical Metamaterials

  • Wedge Diffraction: The Physical Optics Field

    In this chapter, the calculation of physical optics (PO) part of the scattered field is shown, that is, the field generated by the uniform component of the induced surface scattering sources. This calculation can be used to examine the field radiated by the nonuniform sources as the difference between the exact and physical optics fields. The chapter demonstrates the conversion of PO integrals to the canonical form. It also demonstrates the derivation of fast convergent integrals and asymptotic expressions for the PO diffracted field. The related results of a numerical comparison of the PO approximation against the exact solution for the wedge diffraction problem have been presented by Hacivelioglu_et al_.

  • From Refraction to Diffraction

    This chapter contains sections titled:Refraction and Diffraction PhenomenaUnderstanding the Diffraction PhenomenonNo More Parasitic EffectsFrom Refractive Optics to Diffractive OpticsFrom Diffractive Optics to Digital OpticsAre Diffractives and Refractives Interchangeable Elements?

  • Focusing of Multiple Acoustic Edge Waves Diffracted at a Convex Body of Revolution with a Flat Base

    This chapter focuses on multiple acoustic edge waves diffracted at a convex body of revolution with a flat base. It analyses the field generated by the total scattering sources. The first-order (primary) edge waves excited directly by the incident wave are determined by the integral expression applied to the circular edge. The total scattered field on the focal line also includes the reflected rays in front of the object (z < 0) and the shadow radiation behind the object (z > 0). This approximation for the scattered field actually represents an incomplete asymptotic expansion, because it includes only the first term in the individual asymptotic expansion for each multiple edge wave. The higher-order edge waves arise due to the_slope diffraction_of waves running along the flat base of the scattering object.

  • Multimode Grating Sensors

    None

  • Multiple Diffraction of Edge Waves: Grazing Incidence and Slope Diffraction

    This chapter investigates two special cases. The first case is a grazing incidence of edge waves on acoustically hard planar plates. In the asymptotic theory, the incident wave is approximated by an equivalent plane wave. The second case that also needs special treatment occurs when the scattering edge is located in the zero of the incident wave. This is the case for slope diffraction. The chapter considers the important one to be the slope diffraction of the first order, when the first derivative of the incident wave is not equal to zero. Such a situation occurs, for example, in reflector antennas, when one tries to decrease side lobes, and in the process of multiple diffraction between several scatterers or between different parts of the same scatterer. The chapter founds ray asymptotics using the stationary- phase technique.

  • Wedge Diffraction: Exact Solution and Asymptotics

    As the wedge diffraction problem is the basis for the construction of physical theory of diffraction (PTD), its solution is considered in this chapter in detail. First its solution is derived in the form of infinite series and then converted it to Sommerfeld integrals convenient for asymptotic analysis namely, Sommerfeld asymptotics and Pauli asymptotics. The chapter provides the expressions that relate to the excitation of the field by a cylindrical wave, with a specific source term around the wedge in a specific region. These expressions can be modified for excitation by a plane wave. The chapter shows the derivation of asymptotic expressions under the condition that the incident wave does not undergo double and higher-order multiple reflections at faces of the wedge; this is an extension of the Pauli technique. It also demonstrates the use of magic-zero procedure for fast convergent integrals and uniform asymptotics.

  • Specifying and Testing Digital Optics

    This chapter contains sections titled:Fabless Lithographic Fabrication ManagementSpecifying the Fabrication ProcessFabrication EvaluationOptical Functionality Evaluation



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