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, the first two terms of Kline's asymptotic expansion are obtained for the scattering of a plane wave incident along the axis of a perfectly reflecting semi-infinite body of revolution.
Abstract: The first two terms of Kline's asymptotic expansion are obtained for the scattering of a plane wave incident along the axis of a perfectly reflecting semi‐infinite body of revolution. When this method is applied to the paraboloid the exact electromagnetic solution is obtained in closed form. The accuracy of the method of physical optics is studied by using the asymptotic expansion.
32 citations
Book•
15 Mar 2008
TL;DR: In this paper, the authors present a thorough and self-contained introduction to modern optics, covering in full the three components--ray optics, wave optics, and quantum optics, which can be classified into three broad categories: Paraxial ray optics with matrix methods and aberrations, interference, coherence and interferometers, Fourier optics, holography and information processing.
Abstract: This book presents a thorough and self-contained introduction to modern optics, covering in full the three components--ray optics, wave optics, and quantum optics. The text covers all that would be needed over a comprehensive course in optics at the advanced undergraduate or beginning graduate level. Digital cameras, LCD screens, aircraft laser gyroscopes, and the optical fibre-based internet illustrate the penetration of optics in twenty-first century life: these and many more modern applications are presented from first principles. The self-contained material allows the selection of specific themes grouped in the following way: Paraxial ray optics with matrix methods and aberrations - Interference, coherence and interferometers - Diffraction, spectrometers and Gaussian beams - Fourier optics, holography and information processing - Maxwell's theory; scattering, absorption and dispersion in bulk materials; interface behaviour - Quantum phenomena, wave-particle duality, uncertainty principle; Schroedinger analysis of spectra, photon properties - Laser principles, He:Ne to MQW lasers, applications - Detectors: photodiodes, photomultipliers, image intensifiers; response, noise and linearlty; CCDs - Fibre optics, from monomode fibre analysis to dense wavelength division multiplexing; fibre sensors - Photon-atom interactions, optical pumping, cooling and clocks - Second quantization, photon correlations, SPDC, entanglement, tests of quantum mechanics.
32 citations
32 citations
TL;DR: In this paper, the amplitude and phase of the waves inside a regular shape scatterer were calculated by using the PHO-approximation method, which requires the use of Fresnel's and Snell's laws for plane waves.
Abstract: The field radiated everywhere in space may be expressed by means of an integral, in terms of the surface field over a closed surface S. S being the surface of a regular shaped scatterer, that unknown surface field has been evaluated by using the Physical Optics Approximation. The method requires the use of Fresnel's and Snell's laws for plane waves which may be inhomogeneous since the scatterer may have a complex refractive index. Accounting for the finite curvature of the scatterer, the amplitude and phase of the waves inside the scatterer have been calculated. A program which allows the computation of the usual four components of the scattered light has been implemented, checked in various particular situations and been successfully used in the case of a spheroidal scatterer at nose-on incidence.
32 citations
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TL;DR: In this article, the authors derived a class of ultra wideband Airy pulsed beams (AiPBs), which are the extension of the AiB into the time domain, and introduced a frequency scaling of the initial aperture field that rendered the ray skeleton of the field, including the caustic, frequency independent, thus ensuring that all the frequency components propagate along the same curved trajectory and that the AiPB does not disperse.
Abstract: The Airy beam (AiB) has attracted a lot of attention recently because of its intriguing features; the most distinctive ones are the propagation along curved trajectories in free space and the weak diffraction. We have previously shown that the AiB is, in fact, a caustic of the rays that radiate from the tail of the Airy function aperture distribution. Here we derive a class of ultra wideband Airy pulsed beams (AiPBs), which are the extension of the AiB into the time domain. We introduce a frequency scaling of the initial aperture field that renders the ray skeleton of the field, including the caustic, frequency independent, thus ensuring that all the frequency components propagate along the same curved trajectory and that the AiPB does not disperse. The resulting AiPB preserves the intriguing features of the time-harmonic AiB discussed above. An exact closed-form solution for the AiPB is derived using the spectral theory of transients. We also derive wavefront approximations for the field in the time window around the pulse arrival, which are valid uniformly in the vicinity of the caustic. These approximations are based on the so-called uniform geometrical optics, which is extended here to the time domain.
32 citations