{"title":"Light tunneling and anomalous reflection from the diffraction of complex annuli: modeling the forward light scattering by spherical particles.","authors":"Lilian Chabrol, Fabrice R A Onofri","doi":"10.1364/OL.557822","DOIUrl":null,"url":null,"abstract":"<p><p>Anomalous reflection and tunneling contributions of the high-frequency forward light scattering by non-absorbing spheres are modeled by the scalar diffraction of two complex annuli-one for TM and TE polarizations. Their complex radii, which depend on the refractive indices and particle size, are derived from the complex angular momentum (CAM) method, thus suggesting possible extensions to non-electromagnetic scattering. Coupled with the diffraction of a disk, and a geometrical optics approximation (GOA) for the refractive contributions, we propose an accurate hybrid model that requires one to two orders of magnitude less computational time than the Lorenz-Mie theory (LMT) in the near field, a crucial improvement for, e.g., inverse methods.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 6","pages":"2061-2064"},"PeriodicalIF":3.1000,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1364/OL.557822","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
Anomalous reflection and tunneling contributions of the high-frequency forward light scattering by non-absorbing spheres are modeled by the scalar diffraction of two complex annuli-one for TM and TE polarizations. Their complex radii, which depend on the refractive indices and particle size, are derived from the complex angular momentum (CAM) method, thus suggesting possible extensions to non-electromagnetic scattering. Coupled with the diffraction of a disk, and a geometrical optics approximation (GOA) for the refractive contributions, we propose an accurate hybrid model that requires one to two orders of magnitude less computational time than the Lorenz-Mie theory (LMT) in the near field, a crucial improvement for, e.g., inverse methods.
非吸收球对高频正向光散射的反常反射和隧穿贡献是通过两个复环的标量衍射来模拟的--一个用于 TM 偏振，另一个用于 TE 偏振。它们的复半径取决于折射率和颗粒大小，是通过复角动量（CAM）方法推导出来的，因此可能扩展到非电磁散射。结合圆盘衍射和折射贡献的几何光学近似（GOA），我们提出了一个精确的混合模型，它在近场所需的计算时间比洛伦兹-米氏理论（LMT）少一到两个数量级，这对于逆方法等来说是一个至关重要的改进。
期刊介绍：
The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
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