Topic
Physical optics
About: Physical optics is a research topic. Over the lifetime, 5342 publications have been published within this topic receiving 101388 citations. The topic is also known as: wave optics.
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TL;DR: In this article, several methods of approximation applicable to problems in wave propagation governed by a three-dimensional random reduced wave equation are presented within the framework of perturbation theory for moderate wave numbers.
Abstract: Several methods of approximation applicable to problems in wave propagation governed by a three-dimensional random reduced wave equation are presented within the framework of perturbation theory. For moderate wave numbers, the methods collected in this paper include the regular perturbation, two-variable method, the smoothing perturbation and the direct interaction approximation. At high frequencies, the parabolic equation approximation, the logarithmic regular perturbation and the geometric optics approximation are described. The validity and accuracy of various approximations are discussed by comparing them with an exact solution constructed through a function space integration.
33 citations
TL;DR: An accurate and efficient method for the analysis of incident field coupling to traces in inhomogeneous medium based on the application of the physical optics technique is described and an interconnect circuit simulation stamp is derived.
Abstract: Simulation of high-speed circuits and interconnects in the presence of incident electromagnetic interference is becoming an important step in the design cycle. An accurate and efficient method for the analysis of incident field coupling to traces in inhomogeneous medium is described. The method is based on the application of the physical optics technique. An interconnect circuit simulation stamp is derived. This stamp provides an easy link to current simulators and to recently developed model reduction techniques. In addition to accounting for the inhomogeneity of the medium, this method provides significant computational efficiency improvement over conventional approaches.
33 citations
TL;DR: Simulations of the quiet-zone field are done with a two-dimensional finite-difference–time domain method (FDTD), combined with an exact near-field aperture integration method [physical optics (PO)].
Abstract: The need for a numerical analysis of a nonuniform grating arises from antenna testing facilities. A hologram type of compact antenna test range (CATR) is a recently proposed method for antenna testing at millimeter wavelengths. Simulations of the quiet-zone field are done with a two-dimensional finite-difference–time domain method (FDTD), combined with an exact near-field aperture integration method [physical optics (PO)]. © 1997 John Wiley & Sons, Inc. Microwave Opt Technol Lett 15: 134–139, 1997.
33 citations
TL;DR: In this paper, the physical optics fields due to an aperture on a perfectly conducting screen are expressed in terms of line integrals over the boundary of the aperture, which admit arbitrary, source distributions, and are continuous everywhere in the source-free half-space, including the geometric optics shadow boundary.
Abstract: The physical optics fields due to an aperture on a perfectly conducting screen are expressed in terms of line integrals over the boundary of the aperture. These line-integral representations have the same properties as the ones in terms of surface integrals over the aperture; in particular, they admit arbitrary, source distributions, and are continuous everywhere in the source-free half-space, including the geometric optics shadow boundary.
33 citations
Book•
09 Oct 2008
TL;DR: Newton#x2019 s Laws of Motion for a Particle Moving in One Dimension (Newton's Law of Motion, Forces, and Energy in More than One Dimension).
Abstract: Newton#x2019 s Laws of Motion for a Particle Moving in One Dimension.- Applications of Newton#x2019 s Laws of Motion in One Dimension.- Work and Energy in One Dimension.- Motion, Forces, and Energy in More Than One Dimension.- Momentum.- Rotational Motion.- Ideal Fluids.- Viscous Fluids.- Waves and Resonance.- Sound.- Thermal Energy.- Thermodynamics: Beyond the First Law.- Electric Forces and Fields.- Electric Energy and Potential.- Electric Current and Cell Membranes.- Magnetic Fields.- Electromagnetic Induction and Radiation.- Electromagnetic Waves.- Geometrical Optics.- Optical Lenses and Devices.- Wave Optics.- Imaging Using Wave Optics.- Special Relativity and Quantum Physics.- The Structure of Matter.- Nuclear Physics and Medical Applications.
33 citations