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The wave equation: From eikonal to anti-eikonal approximation
Citation
Vázquez Martínez, Luis and Jiménez Burillo, Salvador and Shvartsburg, Alexander B. (2016). The wave equation: From eikonal to anti-eikonal approximation. "Modern Electronic Materials", v. 2 (n. 2); pp. 51-53. ISSN 2452-1779. https://doi.org/10.1016/j.moem.2016.11.001.
Description
| Title: | The wave equation: From eikonal to anti-eikonal approximation |
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| Author/s: |
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| Item Type: | Article |
| Título de Revista/Publicación: | Modern Electronic Materials |
| Date: | June 2016 |
| ISSN: | 2452-1779 |
| Volume: | 2 |
| Subjects: | |
| Freetext Keywords: | Wave equation; Refractive index; Anti-eikonal |
| Faculty: | E.T.S.I. Telecomunicación (UPM) |
| Department: | Matemática Aplicada a las Tecnologías de la Información y las Comunicaciones |
| Creative Commons Licenses: | Recognition - No derivative works - Non commercial |
Abstract
When the refractive index changes very slowly compared to the wave-length we may use the eikonal approximation to the wave equation. In the opposite case, when the refractive index highly variates over the distance of one wave-length, we have what can be termed as the anti-eikonal limit. This situation is addressed in this work. The anti-eikonal limit seems to be a relevant tool in the modelling and design of new optical media. Besides, it describes a basic universal behaviour, independent of the actual values of the refractive index and, thus, of the media, for the components of a wave with wave-length much greater than the characteristic scale of the refractive index.
More information
| Item ID: | 44190 |
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| DC Identifier: | https://oa.upm.es/44190/ |
| OAI Identifier: | oai:oa.upm.es:44190 |
| DOI: | 10.1016/j.moem.2016.11.001 |
| Official URL: | https://doi.org/10.1016/j.moem.2016.11.001 |
| Deposited by: | Biblioteca ETSI Telecomunicación |
| Deposited on: | 16 Dec 2016 13:15 |
| Last Modified: | 18 Mar 2019 15:26 |
