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Total external reflection

About: Total external reflection is a research topic. Over the lifetime, 829 publications have been published within this topic receiving 22213 citations.


Papers
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Journal ArticleDOI
TL;DR: In this article, the authors considered two cases in which a laser light beam is polarized either parallel or perpendicular to the plane of incidence, and the reflection conditions vary from approximately the conditions of Brewster reflection to the conditions characteristics of total internal reflection.
Abstract: Resonance reflection of light from the interface between a dielectric and an alkali vapor is studied. Two cases are considered in which a laser light beam is polarized either parallel or perpendicular to the plane of incidence. Upon scanning of the frequency of the incident laser radiation, in the first case, the reflection conditions vary from approximately the conditions of Brewster reflection to the conditions characteristics of total internal reflection. In the second case, the Brewster reflection conditions are not realized, and the variations in the intensity of the reflected light observed upon frequency scanning are smaller. The rotation of the plane of polarization and the laser frequency tuning make it possible to rapidly switch between these reflection conditions.

1 citations

Journal Article
TL;DR: In this paper, the authors analyzed the effect of the parameters of the scattering phase function on the accuracy of the S (1) approximation, and showed that the first partial reflection function adequately describes even some specific features in the spectrum of reflected radiation, including local maxima and inflection points.
Abstract: This paper continues the analysis of the problem of light reflection from a semi-infinite dissipative medium. Using the method of flux separation, we perform an analytical calculation of the first partial reflection function S (1) integrated over the azimuthal angle in the case when the expansion of the scattering phase function in spherical harmonics involves three Legendre polynomials. The phase functions corresponding to isotropic and Rayleigh scattering of light from random scattering centers are particular cases of the phase function of the considered type. The first partial reflection function S (1) describes the angular distribution of photons that escape from the medium reversing the sign of their velocity projections on the direction of the inner normal only once. In the case of the normal incidence of radiation on the surface of a medium, the first partial reflection function is compared with the total reflection function S, obtained by the numerical solution of the relevant nonlinear integral equation. We analyze the influence of the parameters of the scattering phase function on the accuracy of the S (1) approximation. It is demonstrated that the first partial reflection function adequately describes even some specific features in the spectrum of reflected radiation, including local maxima and inflection points, For media with strong absorption, the quantities S and S (1 are shown to coincide with each other with an accuracy up to several percent. For media with weak absorption, the remaining part of reflected radiation (i.e., S- S (1) , which is associated with photons that reverse the sign of their velocity projections on the direction of the inner normal to the surface of the medium three and more times, is described by a dependence close to a cosine function.

1 citations

Patent
23 Jul 2008
TL;DR: In this article, a keypad with increased refractive index includes a light-guiding elastic element, an optical refractive layer and at least one light-emitting element.
Abstract: A keypad with increased refractive index includes a light-guiding elastic element, an optical refractive layer and at least one light-emitting element. The optical refractive layer is applied on an upper surface of the light-guiding elastic element. The light-emitting element is provided on one side of the light-guiding elastic element. The refractive index of air is defined as a real number x. The refractive index of the light-guiding elastic element is defined as a real number y. The refractive index of the optical refractive layer is defined as a real number z. The refractive index z is larger than the refractive index x. Since the optical refractive layer is applied on the light-guiding elastic element and the refractive index of the optical refractive layer is different from that of the light-guiding elastic element, the angle of total reflection of the light in the light-guiding elastic element can be changed.

1 citations

Proceedings ArticleDOI
06 Jun 2003
TL;DR: In this article, the energy flux and the Goos Manchen shift for various cases were examined and it was shown that totally internal reflected beam can be amplified if the lower-index medium has gain.
Abstract: Totally internal reflected beam can be amplified if the lower-index medium has gain. We examine the energy flux and the Goos Manchen shift for various cases.

1 citations

Proceedings ArticleDOI
07 Jul 2005
TL;DR: In this article, the authors discuss the issues related to the experimental investigation of the phenomenon of total external reflection of γ-quanta from macroscopically smooth surface using Monte Carlo method.
Abstract: The article is on the issues related to the experimental investigation of the phenomenon of total external reflection of γ-quanta from macroscopically smooth surface. The difficulties in the performance of experiment and interpretation of its results required the conduction of computer simulation of the experiment with the method of statistical test (Monte-Carlo method). The results of the performed simulation indicate the possibility for the experiments on the studies of total external reflection of γ-quanta and allow to plan and carry out the experiment in optimal conditions. The experimental data and computer modeling results are compared and analyzed.

1 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20224
20214
20206
20198
20189
201710