{"title":"异面外介质元表面连续体中与偏振无关的双准束缚态。","authors":"Guanghou Sun, Xingbing Chao, Jianqiang Liu, Jianmin Yu, Gaoping Xu","doi":"10.1364/OL.542458","DOIUrl":null,"url":null,"abstract":"<p><p>Symmetry-protected quasi-bound states in the continuum (qBICs) in metasurfaces with broken in-plane symmetry are extensively investigated to achieve high quality-factor (Q-factor) resonances. Herein, we propose the hetero-out-of-plane (H-OP) dielectric metasurface, which is composed of Si cuboids tetramer broken out-of-plane symmetry by adding a layer of silica. Dual polarization-independent qBICs are realized. The multipolar decomposition of scattering powers and near-field distributions reveal the physical mechanism of dual qBICs modes, which are dominated by the magnetic quadrupole and the toroidal dipole. The two symmetry-protected qBICs in the H-OP metasurface have robust Q-factors and stable resonance wavelengths compared with these in the out-of-plane metasurface. Our results provide a route to achieve the high Q-factor resonator with better performance applied in many optical and optoelectronic devices.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"49 24","pages":"7094-7097"},"PeriodicalIF":3.1000,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Dual polarization-independent quasi-bound states in the continuum in a hetero-out-of-plane dielectric metasurface.\",\"authors\":\"Guanghou Sun, Xingbing Chao, Jianqiang Liu, Jianmin Yu, Gaoping Xu\",\"doi\":\"10.1364/OL.542458\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Symmetry-protected quasi-bound states in the continuum (qBICs) in metasurfaces with broken in-plane symmetry are extensively investigated to achieve high quality-factor (Q-factor) resonances. Herein, we propose the hetero-out-of-plane (H-OP) dielectric metasurface, which is composed of Si cuboids tetramer broken out-of-plane symmetry by adding a layer of silica. Dual polarization-independent qBICs are realized. The multipolar decomposition of scattering powers and near-field distributions reveal the physical mechanism of dual qBICs modes, which are dominated by the magnetic quadrupole and the toroidal dipole. The two symmetry-protected qBICs in the H-OP metasurface have robust Q-factors and stable resonance wavelengths compared with these in the out-of-plane metasurface. Our results provide a route to achieve the high Q-factor resonator with better performance applied in many optical and optoelectronic devices.</p>\",\"PeriodicalId\":19540,\"journal\":{\"name\":\"Optics letters\",\"volume\":\"49 24\",\"pages\":\"7094-7097\"},\"PeriodicalIF\":3.1000,\"publicationDate\":\"2024-12-15\",\"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.542458\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1364/OL.542458","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}
Dual polarization-independent quasi-bound states in the continuum in a hetero-out-of-plane dielectric metasurface.
Symmetry-protected quasi-bound states in the continuum (qBICs) in metasurfaces with broken in-plane symmetry are extensively investigated to achieve high quality-factor (Q-factor) resonances. Herein, we propose the hetero-out-of-plane (H-OP) dielectric metasurface, which is composed of Si cuboids tetramer broken out-of-plane symmetry by adding a layer of silica. Dual polarization-independent qBICs are realized. The multipolar decomposition of scattering powers and near-field distributions reveal the physical mechanism of dual qBICs modes, which are dominated by the magnetic quadrupole and the toroidal dipole. The two symmetry-protected qBICs in the H-OP metasurface have robust Q-factors and stable resonance wavelengths compared with these in the out-of-plane metasurface. Our results provide a route to achieve the high Q-factor resonator with better performance applied in many optical and optoelectronic devices.
期刊介绍:
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