<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">mateltech</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Материалы электронной техники</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki = Materials of Electronics Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1609-3577</issn><issn pub-type="epub">2413-6387</issn><publisher><publisher-name>MISIS</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/1609-3577-2016-2-103-107</article-id><article-id custom-type="elpub" pub-id-type="custom">mateltech-269</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Моделирование процессов и материалов</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MODELING OF PROCESSES AND MATERIALS</subject></subj-group></article-categories><title-group><article-title>Волновое уравнение: от эйконального к неэйкональному приближению</article-title><trans-title-group xml:lang="en"><trans-title>The wave equation: from eikonal to anti-eikonal approximation</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Васкес</surname><given-names>Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Vázquez</surname><given-names>L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Васкес Луис — Dept. Matemática Aplicada, Facultad de Informática</p><p>Madrid</p></bio><bio xml:lang="en"><p>Luis Vázquez — Dept. Matemática Aplicada, Facultad de Informática</p><p>Madrid</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хименес</surname><given-names>С.</given-names></name><name name-style="western" xml:lang="en"><surname>Jiménez</surname><given-names>S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хименес Сальвадор — Dept. Matemática Aplicada a las TIC, ETSI Telecomunicación</p><p>30 Complutense Ave., 28040, Madrid</p><p> </p></bio><bio xml:lang="en"><p>Salvador Jiménez — Dept. Matemática Aplicada a las TIC, ETSI Telecomunicación</p><p>30 Complutense Ave., 28040, Madrid</p></bio><email xlink:type="simple">s.jimenez@upm.es</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шварцбург</surname><given-names>А. Б</given-names></name><name name-style="western" xml:lang="en"><surname>Shvartsburg</surname><given-names>A. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шварцбург Александр Борисович</p><p>Ижорская ул., д. 13/2, Москва, 125412</p></bio><bio xml:lang="en"><p>Alexander B. Shvartsburg </p><p>13/2 Izhorskaya Str., Moscow 125412</p></bio><email xlink:type="simple">alex-s-49@ya.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Universidad Complutense de Madrid</institution><country>Испания</country></aff><aff xml:lang="en"><institution>Universidad Complutense de Madrid</institution><country>Spain</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Universidad Politécnica de Madrid</institution><country>Испания</country></aff><aff xml:lang="en"><institution>Universidad Politécnica de Madrid</institution><country>Spain</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Объединенный институт высоких температур Российской Академии наук; Институт космических исследований Российской Академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Joint Institute for High Temperatures Russian Academy of Sciences; &#13;
Institute for Space Researches Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>30</day><month>06</month><year>2016</year></pub-date><volume>19</volume><issue>2</issue><fpage>103</fpage><lpage>107</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Васкес Л., Хименес С., Шварцбург А.Б., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Васкес Л., Хименес С., Шварцбург А.Б.</copyright-holder><copyright-holder xml:lang="en">Vázquez L., Jiménez S., Shvartsburg A.B.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://met.misis.ru/jour/article/view/269">https://met.misis.ru/jour/article/view/269</self-uri><abstract><p>В случае медленного изменения коэффициента преломления на расстояниях порядка длины волны для решения волнового уравнения можно использовать известное эйкональное приближение. Рассмотрена противоположная ситуация, когда коэффициент преломления резко меняется на протяжении одной длины волны, и имеет место так называемый антиэйкональный предел. Антиэйкональный предел оказывается удобным инструментом для моделирования и проектирования новых оптических сред. Кроме того, он позволяет описывать базовое универсальное поведение независимо от реальных значений коэффициента преломления и, следовательно, от параметров самой среды, в случае волновых компонентов с длиной волны, значительно превышающей характерную длину изменения коэффициента преломления.</p></abstract><trans-abstract xml:lang="en"><p>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.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>волновое уравнение</kwd><kwd>коэффициент преломления</kwd><kwd>антиэйкональный предел</kwd></kwd-group><kwd-group xml:lang="en"><kwd>wave equation</kwd><kwd>refractive index</kwd><kwd>anti-eikonal</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Instituto de Investigaciones Económicas y Sociales Francisco de Vitoria</funding-statement><funding-statement xml:lang="en">Instituto de Investigaciones Económicas y Sociales Francisco de Vitoria</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Kennedy, S. R. Porous broadband antireflection coating by glancing angle deposition / S. R. Kennedy, M. J. Brett // Applied Optics. - 2003. - V. 42, N 22. - P. 4573—4579. DOI: 10.1364/AO.42.004573</mixed-citation><mixed-citation xml:lang="en">Kennedy S. R., Brett M. J. Porous broadband antireflection coating by glancing angle deposition. Applied Optics. 2003, vol. 42, no. 22, pp. 4573—4579. DOI: 10.1364/AO.42.004573</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">O’Brien, S. Magnetic activity at infrared frequencies in structured metallic photonic crystals / S. O’Brien, J. P. Pendry // J. Physics: Condensed Matter. - 2002. - V. 14, N 25. - P. 6383—6394. DOI: 10.1088/0953-8984/14/25/307</mixed-citation><mixed-citation xml:lang="en">O’Brien S., Pendry J. P. Magnetic activity at infrared frequencies in structured metallic photonic crystals. J. Physics: Condensed Matter, 2002, vol. 14, no. 25, pp. 6383—6394. DOI: 10.1088/09538984/14/25/307</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Alù, A. Negative effective permeability and left-handed materials at optical frequencies / A. Alù, A. Salandrino, N. Engheta // Optics Express. - 2006. - V. 14, N 4. - P. 1557—1567. DOI: 10.1364/OE.14.001557</mixed-citation><mixed-citation xml:lang="en">Alù A., Salandrino A., Engheta N. Negative effective permeability and left-handed materials at optical frequencies. Optics Express, 2006, vol. 14, no. 4, pp. 1557—1567. DOI: 10.1364/OE.14.001557</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Zhao, Q. Mie resonance-based dielectric metamaterials / Q. Zhao, J. Zhou, J. Zhang, F. Lippens // Materials Today. - 2009. - V. 12, N 12. - P. 60—69. DOI: 10.1016/S1369-7021(09)70318-9</mixed-citation><mixed-citation xml:lang="en">Zhao Q., Zhou J., Zhang J., Lippens F. Mie resonance-based dielectric metamaterials. Materials Today, 2009, vol. 12, no. 12, pp. 60—69. DOI: 10.1016/S1369-7021(09)70318-9</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Borisov, A. G. Role of electromagnetic trapped modes in extraordinary transmission in nanostructured materials / A. G. Borisov, F. J. García de Abajo, S. V. Shabanov // Phys. Rev. B. - 2005. - V. 71. - P. 075408. DOI: 10.1103/PhysRevB.71.075408</mixed-citation><mixed-citation xml:lang="en">Borisov A. G., García de Abajo F. J., Shabanov S. V. Role of electromagnetic trapped modes in extraordinary transmission in nananostructured materials. Phys. Rev. B., 2005, vol. 71, pp. 075408. DOI: 10.1103/PhysRevB.71.075408</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">García de Abajo, F. J. Tunneling Mechanism of light transmission through metallic films / F. J. García de Abajo, G. Gómez- Santos, L. A. Blanco, A. G. Borisov, S. V. Shabanov // Phys. Rev. Lett. - 2005. - V. 95. - P. 067403. DOI: 10.1103/PhysRevLett.95.067403</mixed-citation><mixed-citation xml:lang="en">García de Abajo F. J., Gómez-Santos G., Blanco L. A., Bori11. Shvartsburg A. B., Maradudin A. A. Waves in gradient sov A. G., Shabanov S. V. Tunneling Mechanism of light transmission metamaterials. Hackensack (NJ) ; London : World Scientific Pub. through metallic films. Phys. Rev. Lett., 2005, vol. 95, pp. 067403.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Gilles, L. Electromagnetic shocks on the optical cycle of ultrashort pulses in triple-resonance Lorentz dielectric media with subfemtosecond nonlinear electronic Debye relaxation / L. Gilles, J. V. Moloney, L. Vázquez // Phys. Rev. E. - 1999. - V. 60, N 1. - P. 1051—1059. DOI: 10.1103/PhysRevE.60.1051</mixed-citation><mixed-citation xml:lang="en">Gilles L., Moloney J. V., Vázquez L. Electromagnetic shocks on the optical cycle of ultrashort pulses in triple-resonance Lorentz dielectric media with subfemtosecond nonlinear electronic Debye relaxation. Phys. Rev. E., 1999, vol. 60, no. 1, pp. 1051—1059. DOI: 10.1103/PhysRevE.60.1051</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Porras, M. A. Creation of localized optical waves that do not obey the radiation condition at infinity / M. A. Porras, F. Salazar- Bloise, L. Vázquez // Phys. Rev. Lett. - 2000. - V. 85, N 10. - P. 2104— 2107. DOI: 10.1103/PhysRevLett.85.2104</mixed-citation><mixed-citation xml:lang="en">Porras M. A., Salazar-Bloise F., Vázquez L. Creation of local localized optical waves that do not obey the radiation condition at infinity. Phys. Rev. Lett., 2000, vol. 85, no. 10, pp. 2104—2107. DOI: 10.1103/PhysRevLett.85.2104</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Porras, M. A. Focusing properties of shocking optical pulses / M. A. Porras, F. Salazar-Bloise, L. Vázquez // Optics Lett. - 2001. - V. 26, N 6. - P. 376—378. DOI: 10.1364/OL.26.000376</mixed-citation><mixed-citation xml:lang="en">Porras M. A., Salazar-Bloise F., Vázquez L. Focusing properties of shocking optical pulses. Optics Lett., 2001, vol. 26, no. 6, pp. 376—378. DOI: 10.1364/OL.26.000376</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">В период 2004—2012 гг. и в ходе работы «Access to Research Infrastructures» Европейская лаборатория нелинейной спектроскопии (LENS), Флоренция, предоставляла экспериментальную базу для нашего теоретического исследования образования и характеристик электромагнитных ударных волн в рамках проектов LENS000242 (2004): http://www.laserlabeurope.eu/transnational-access/access-facilities/access-projects-lens, LENS001677 (2012): https://laserlab.mbi-berlin.de/access/publish/listAccessProjects.jsf</mixed-citation><mixed-citation xml:lang="en">In the period 2004—2012 and through the «Access to Research Infrastructures» the European Laboratory for Nonlinear Spectroscopy (LENS), in Firenze, provided the experimental support to detect the generation and properties of electromagnetic shock waves that we studied numerically. The projects were LENS000242 (2004): http://www.laserlabeurope.eu/transnational-access/accessfacilities/access-projects-lens, and LENS001677 (2012): https://laserlab.mbi-berlin.de/access/publish/listAccessProjects.jsf</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Shvartsburg, A. B. Waves in gradient metamaterials / A. B. Shvartsburg, A. A. Maradudin. - Hackensack (NJ) ; London : World Scientific Pub. Co., 2013. - 328 p.</mixed-citation><mixed-citation xml:lang="en">Shvartsburg A. B., Maradudin A. A. Waves in gradient metamaterials. Hackensack (NJ) ; London : World Scientific Pub. Co., 2013. 328 p.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Kravtsov, Yu. A. Geometric optics in engineering physics / Yu. A. Kravtsov. - Harrow (UK) : Alpha Science International, 2005.</mixed-citation><mixed-citation xml:lang="en">Kravtsov Yu. A. Geometric optics in engineering physics. Harrow (UK): Alpha Science International, 2005.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Born, M. Principles of optics / M. Born, E. Wolf. - Cambridge (UK) : Cambridge University Press, 1998.</mixed-citation><mixed-citation xml:lang="en">Born M., Wolf E. Principles of optics. Cambridge (UK): Cambridge University Press, 1998.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Bender, C. M. Advanced mathematical methods for scientists and engineers / C. M. Bender, S. A. Orzag. - New York : Springer-Verlag, 1999.</mixed-citation><mixed-citation xml:lang="en">Bender C. M., Orzag S. A. Advanced mathematical methods for scientists and engineers. New York: Springer−Verlag, 1999.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Konotop, V. V. Wave interaction with a fractal layer / V. V. Konotop, Fei Zhang, L. Vázquez // Phys. Rev. E. - 1993. - V. 48, N 5. - P. 4044—4048. DOI: 10.1103/PhysRevE.48.4044</mixed-citation><mixed-citation xml:lang="en">Konotop V. V., Fei Zhang, Vázquez L. Wave interaction with a fractal layer. Phys. Rev. E., 1993, vol. 48, no. 5, pp. 4044—4048. DOI: 10.1103/PhysRevE.48.4044</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Rañada, A. F. Quantum mechanics of nonlinear classical fields / A. F. Rañada, L. Vázquez // Anales de Física - 1980. - V. 76. - P. 139—141. DOI: 10.1007/BF01807613</mixed-citation><mixed-citation xml:lang="en">Rañada A. F., Vázquez L. Quantum mechanics of non linear classical fields. Anales de Física, 1980, vol. 76, pp. 139—141. DOI: 10.1007/BF01807613</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
