A unified approach to photonic hooks via engineered spatial symmetry breaking; Optics Communications; Vol. 620
| Parent link: | Optics Communications.— .— Amsterdam: Elsevier Science Publishing Company Inc. Vol. 620.— 2026.— Article number 133639, 9 p. |
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| Other Authors: | , , , , , |
| Summary: | Title screen Photonic hooks, as asymmetric curved variants of photonic jets, have been demonstrated in optical, plasmonic, terahertz, and acoustic regimes. However, these generation schemes have largely been investigated independently, and a unified physical interpretation of different photonic-hook formation mechanisms remains insufficiently established. In addition, many existing approaches require structurally complex, technically demanding, or costly configurations, which may limit their practical implementation. In this work, we numerically investigate photonic-hook generation using different types of heterogeneous, or patchy, mesoscale dielectric particles with deliberately broken spatial symmetry. The studied configurations include particles partially illuminated by an external opaque screen, particles partially coated with metallic or high-index dielectric thin films, and one-sided truncated particles. Finite-element simulations reveal that external wavefront blocking and partial surface coating can produce photonic hooks with comparable characteristics, indicating their physical equivalence as aperture-limited asymmetric illumination schemes. In contrast, truncated particles generate photonic hooks through intrinsic structural asymmetry, offering improved utilization of incident optical energy. The effects of patch geometry, coating material, truncation angle, and particle deformation on hook curvature, length, intensity enhancement, and full width at half maximum are systematically analyzed. These results provide a unified and cost-effective framework for controlling photonic hooks and may facilitate their application in mesoscale particle-assisted super-resolution imaging, mesotronics, nanotechnology, and life-science research Текстовый файл AM_Agreement |
| Language: | English |
| Published: |
2026
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| Online Access: | https://doi.org/10.1016/j.optcom.2026.133639 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=688388 |