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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.


Papers
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Journal ArticleDOI
TL;DR: In this paper, the effect of the internal resonances of individual particles has on the emitted intensity, and how optimal tuning of the size and separation of the particles can enhance the quality factor by more than four orders of magnitude.
Abstract: One of the current challenges in laser optics is to take advantage of the resonant modes within particles to obtain high-quality microcavities with low threshold. We present a study of the effect that the internal resonances of individual particles have on the emitted intensity, and demonstrate how optimal tuning of the size and separation of the particles can enhance the quality factor by more than four orders of magnitude. The potential applications of this work on the design of an optimal microcavity and on a random laser are discussed.

24 citations

Journal ArticleDOI
TL;DR: In this article, a method for rendering objects coated with multilayer thin films, taking into consideration multiple reflection and refraction, interference, and absorption of light inside the films, is proposed.
Abstract: This paper proposes a method for rendering objects coated with multilayer thin films, taking into consideration multiple reflection and refraction, interference, and absorption of light inside the films. The proposed method is based on wave optics, and it can accurately visualize the optical effects of multilayer films consisting of not only dielectric materials, but also metallic and semiconductive materials. Optical properties of a SiO2 film coating on a silicon base, and several kinds of multilayer films coating windowpanes, glasses, or teapots are visualized to demonstrate the usefulness of the proposed method.

24 citations

Journal ArticleDOI
TL;DR: In this article, the authors present exact solutions of the wave equation involving an arbitrary wave form with a phase closely similar to the general astigmatic phase of paraxial wave optics, which are generalizations of the known Bateman-type wave solutions.
Abstract: We present exact solutions of the wave equation involving an arbitrary wave form with a phase closely similar to the general astigmatic phase of paraxial wave optics. Special choices of the wave form allow general astigmatic beamlike and pulselike waves with a Gaussian-type unrestricted localization in space and time. These solutions are generalizations of the known Bateman-type waves obtained from the connection existing between beamlike solutions of the paraxial parabolic equation and relatively undistorted wave solutions of the wave equation. As a technical tool, we present a full description of parametrizations of $2\ifmmode\times\else\texttimes\fi{}2$ symmetric matrices with positive imaginary part, which arise in the theory of Gaussian beams.

24 citations

Journal ArticleDOI
TL;DR: In this paper, the higher order corrections to geometrical optics are studied in general relativity for an electromagnetic test wave, and an explicit expression is found for the average energy-momentum tensor which takes into account the first order corrections.
Abstract: The higher order corrections to geometrical optics are studied in general relativity for an electromagnetic test wave. An explicit expression is found for the average energy–momentum tensor which takes into account the first‐order corrections. Finally the first‐order corrections to the well‐known area‐intensity law of geometrical optics are derived.

24 citations

Journal ArticleDOI
TL;DR: In this article, the authors proposed an adaptive aperture partition algorithm to solve the divergence problem of the SBR method when ray tubes intersect discontinuous parts of the target, such as the boundary, and this affects the accuracy to some extent.
Abstract: The shooting and bouncing ray (SBR) method may give rise to a divergence problem when ray tubes intersect discontinuous parts of the target, such as the boundary, and this affects the accuracy to some extent. This paper proposes an adaptive aperture partition algorithm to solve this problem. The proposed algorithm adaptively splits the virtual aperture into continuous irregular beams instead of discrete uniform ray tubes according to the geometry of the target during the recursive beam tracing. These beams form a beam tree, the level of which represents the number of reflections. Geometric optics is applied to the representative propagation path of each leaf beam to obtain the exit field, and then physical optics is used to evaluate each leaf beam's scattered field. The proposed algorithm could generate the convergent solution of the SBR method when the ray-tube size tends toward infinitesimal. Additionally, this paper describes the beam-triangle intersection in detail and utilizes the kd-tree to accelerate the beam-target intersection. Numerical experiments demonstrate that adaptive aperture partition can greatly improve the accuracy of the SBR method, and the computational efficiency can be also significantly enhanced in several applications, such as the RCS prediction in the THz band.

24 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202357
2022157
202196
2020140
2019141
2018162