Results 11 to 20 of about 144,163 (329)
Propagation and Focusing Properties of Vortex Beams Based on Light Ray Tracing
Frontiers in Physics, 2022 By using the ray-tracing method based on geometric optics, we studied the propagating and focusing characteristics of vortex beams with a top-hat intensity distribution.
Meng-Qiang Cai +4 more
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Use of Nonlinear Operators for Solving Geometric Optics Problems
East European Journal of Physics, 2022 The aim of this work is to develop and apply a mathematical apparatus based on nonlinear operators for solving problems of geometric optics, namely the construction of images of objects in systems of thin lenses. The problem of constructing the image of
Ilia V. Demydenko
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Geometrical vs wave optics under gravitational waves [PDF]
, 2015 We present some new derivations of the effect of a plane gravitational wave on a light ray. A simple interpretation of the results is that a gravitational wave causes a phase modulation of electromagnetic waves.
Angélil, Raymond, Saha, Prasenjit
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Geometric optics and the “hairy ball theorem”
Results in Physics, 2016 Applications of the hairy ball theorem to the geometrical optics are discussed. When the ideal mirror, topologically equivalent to a sphere, is illuminated at every point, the “hairy ball theorem” prescribes the existence of at least one point at which ...
Edward Bormashenko, Alexander Kazachkov
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Scattering of ECRF waves by edge density fluctuations and blobs
EPJ Web of Conferences, 2015 The scattering of electron cyclotron waves by density blobs embedded in the edge region of a fusion plasma is studied using a full-wave model. The full-wave theory is a generalization of the usual approach of geometric optics ray scattering by blobs ...
Ram Abhay K., Hizanidis Kyriakos
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Observation of a non-adiabatic geometric phase for elastic waves [PDF]
, 2012 We report the experimental observation of a geometric phase for elastic waves in a waveguide with helical shape. The setup reproduces the experiment by Tomita and Chiao [A. Tomita, R.Y. Chiao, Phys. Rev. Lett.
Agarwal +24 more
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Two approaches to the problem of ray seismic tomography
Геофизический журнал, 2015 Approximation of nonlinear geophysical medium as a linear one substantiates a transition to geometrical seismics based on geometric optics. Conditions, necessary and sufficient for application of geometrical optics bring possibility of linearization ...
T.A. Tsvetkova
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Analysis of KVN 21m Radio Antenna Optics using Ray-Tracing Method [PDF]
Journal of Astronomy and Space Sciences, 2009 In this work, we calculate drop in antenna gain, aperture phase distribution, and antenna pointing shift of KVN(Korean VLBI Network) 21m shaped Cassegrain antenna due to misalignments of antenna optics using ray-tracing method.
Jae-Han Bae, Do-Young Byun
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The classical limit of quantum optics: not what it seems at first sight
New Journal of Physics, 2013 What light is and how to describe it has always been a central subject in physics. As our understanding has increased, so have our theories changed: geometrical optics, wave optics and quantum optics are increasingly sophisticated descriptions, each ...
Yakir Aharonov +5 more
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Quadrature Squeezing and Geometric-Phase Oscillations in Nano-Optics
Nanomaterials, 2020 The geometric phase, as well as the familiar dynamical phase, occurs in the evolution of a squeezed state in nano-optics as an extra phase. The outcome of the geometric phase in that state is somewhat intricate: its time behavior exhibits a combination ...
Jeong Ryeol Choi
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