{"title":"Field Structures and Singularities in Subwavelength Optics","authors":"M. I. Tribelsky, B. S. Luk’yanchuk","doi":"10.3103/S002713492470245X","DOIUrl":null,"url":null,"abstract":"<p>A brief overview of the current state of the problem of electromagnetic field singularities arising from the refraction and scattering of light by material objects is given. The discussion begins with caustics arising from ray tracing in geometric optics and consistently moves toward increasing the accuracy of consideration and decreasing the scale, ending with a description of singularities in light scattering by subwavelength particles. Common and distinctive features of various types of singularities, the role of the symmetry of the problem and the law of conservation of energy are revealed. Physical foundations and methods for overcoming the diffraction limit are discussed. The theoretical description is illustrated by experimental examples. Various practical applications of the effects under consideration are indicated.</p>","PeriodicalId":711,"journal":{"name":"Moscow University Physics Bulletin","volume":"79 6","pages":"685 - 708"},"PeriodicalIF":0.4000,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Moscow University Physics Bulletin","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.3103/S002713492470245X","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
A brief overview of the current state of the problem of electromagnetic field singularities arising from the refraction and scattering of light by material objects is given. The discussion begins with caustics arising from ray tracing in geometric optics and consistently moves toward increasing the accuracy of consideration and decreasing the scale, ending with a description of singularities in light scattering by subwavelength particles. Common and distinctive features of various types of singularities, the role of the symmetry of the problem and the law of conservation of energy are revealed. Physical foundations and methods for overcoming the diffraction limit are discussed. The theoretical description is illustrated by experimental examples. Various practical applications of the effects under consideration are indicated.
期刊介绍:
Moscow University Physics Bulletin publishes original papers (reviews, articles, and brief communications) in the following fields of experimental and theoretical physics: theoretical and mathematical physics; physics of nuclei and elementary particles; radiophysics, electronics, acoustics; optics and spectroscopy; laser physics; condensed matter physics; chemical physics, physical kinetics, and plasma physics; biophysics and medical physics; astronomy, astrophysics, and cosmology; physics of the Earth’s, atmosphere, and hydrosphere.