Plane Wave Diffraction by Thick Dielectric Gratings, and Zone Phase Plates PDF Download
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Author: Harry Alfred Shubert Publisher: ISBN: Category : Electrostatics Languages : en Pages : 129
Book Description
The diffraction of a plane electromagnetic wave by an infinite grating of dielectric bars was obtained by two methods. One is an improved wave optics method, accounting for multiple reflections. The other is a more exact formulation as a boundary value problem, which is solved numerically. The results were compared with each other and with experiment. The diffraction is specified in terms of the amplitudes of the grating lobes, both the 'real' classical lobes, and the lobes with complex 'directions, ' corresponding to waves evanescent in the direction normal to the grating. The latter are found to be relatively negligible, as compared to those for a grating of perfect conducting bars, for example. This important result is discussed at length. Though the more exact analysis appears to work at least for grating constants of between zero and five wavelengths, the emphasis is placed on results for grating constants somewhat larger than a wavelength. These are used to make inferences about the action of zone phase plates, used as focussing devices, by considering the plates as generalized gratings and applying parageometric optics methods. (Author).
Author: Harry Alfred Shubert Publisher: ISBN: Category : Electrostatics Languages : en Pages : 129
Book Description
The diffraction of a plane electromagnetic wave by an infinite grating of dielectric bars was obtained by two methods. One is an improved wave optics method, accounting for multiple reflections. The other is a more exact formulation as a boundary value problem, which is solved numerically. The results were compared with each other and with experiment. The diffraction is specified in terms of the amplitudes of the grating lobes, both the 'real' classical lobes, and the lobes with complex 'directions, ' corresponding to waves evanescent in the direction normal to the grating. The latter are found to be relatively negligible, as compared to those for a grating of perfect conducting bars, for example. This important result is discussed at length. Though the more exact analysis appears to work at least for grating constants of between zero and five wavelengths, the emphasis is placed on results for grating constants somewhat larger than a wavelength. These are used to make inferences about the action of zone phase plates, used as focussing devices, by considering the plates as generalized gratings and applying parageometric optics methods. (Author).
Author: Erwin G. Loewen Publisher: CRC Press ISBN: 1482273713 Category : Technology & Engineering Languages : en Pages : 628
Book Description
"Offers and up-to-date assessment of the entire field of diffraction gratings, including history, physics, manufacture, testing, and instrument design. Furnishes--for the first time in a single-source reference--a thorough review of efficiency behavior, examining echelles as well as concave, binary, transmission, fiber, and waveguide gratings."
Author: J.J Stamnes Publisher: Routledge ISBN: 1351404687 Category : Science Languages : en Pages : 630
Book Description
Using numerous mathematical and numerical techniques of diffraction theory, Waves in Focal Regions: Propagation, Diffraction and Focusing of Light, Sound and Water Waves provides a full and richly illustrated description of waves in focal regions. Unlike most books, the author treats electromagnetic, acoustic, and water waves in one comprehensive volume. After an introductory section, the book describes approximate diffraction theories and efficient numerical methods to study the focusing of various kinds of waves. It then covers the physical interpretation of the theories, their accuracy, and the computational savings obtained, emphasizing uniform asymptotic results that remain valid in the vicinity of shadow boundaries and caustics. The next part deals with the focusing of scalar waves, including thorough theoretical analyses and detailed contour maps of diffraction patterns in focal regions for a variety of different system parameters, such as f-number, Frensel number, aperture shape, amplitude distribution, and wavefront aberration. The author proceeds to explore the diffraction and focusing of electromagnetic waves. First solutions are derived for fields radiated by sources, reflected and refracted at plane interfaces, or diffracted by apertures in plane screens, and then these solutions are applied to study the focusing in homogeneous media and through a plane dielectric interface. In both cases, the author includes many computed results of the electromagnetic field distribution near focus. Presenting both theoretical and experimental results, the following part examines the focusing of sound and water waves by means of zone-plate lenses. The book concludes with a detailed study of the diffraction and focusing of water waves and a comparison of the results of both linear and nonlinear theories with those of experiments.
Author: University of Illinois (Urbana-Champaign campus). Office of Engineering Publications Publisher: ISBN: Category : Engineering Languages : en Pages : 252
Author: Harry Alfred Shubert
Author: Harry Alfred Shubert
Author: 
Author: 
Author: Erwin G. Loewen
Author: D. Maystre
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Author: United States. National Bureau of Standards
Author: Ronold Wyeth Percival King
Author: J.J Stamnes
Author: University of Illinois (Urbana-Champaign campus). Office of Engineering Publications