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Ultrabroadband superoscillatory lens composed by plasmonic metasurfaces for subdiffraction light focusing
Tang, Dongliang; Wang, Changtao; Zhao, Zeyu; Wang, Yanqin; Pu, Mingbo; Li, Xiong; Gao, Ping; Luo, Xiangang; Luo, Xiangang (lxg@ioe.ac.cn)
Source PublicationLaser and Photonics Reviews
Volume9Issue:6Pages:713-719
2015
Language英语
ISSN1863-8880
DOI10.1002/lpor.201500182
Indexed BySCI ; Ei
WOS IDWOS:000368255200014
Subtype期刊论文
AbstractConventional optics is diffraction limited due to the cutoff of spatial frequency components, and evanescent waves allow subdiffraction optics at the cost of complex near-field manipulation. Recently, optical superoscillatory phenomena were employed to realize superresolution lenses in the far field, but suffering from very narrow working wavelength band due to the fragility of the superoscillatory light field. Here, an ultrabroadband superoscillatory lens (UBSOL) is proposed and realized by utilizing the metasurface-assisted law of refraction and reflection in arrayed nanorectangular apertures with variant orientations. The ultrabroadband feature mainly arises from the nearly dispersionless phase profile of transmitted light through the UBSOL for opposite circulation polarization with respect to the incident light. It is demonstrated in experiments that subdiffraction light focusing behavior holds well with nearly unchanged focal patterns for wavelengths spanning across visible and near-infrared light. This method is believed to find promising applications in superresolution microscopes or telescopes, high-density optical data storage, etc. Ultrabroadband optical superoscillatory lens and subdiffraction focusing in the far field are proposed and demonstrated with a plasmonic metasurface. The ultrabroadband feature mainly arises from the dispersionless phase profile across visible and near-infrared light wavelengths. This method is believed to provide a promising access to broadband far-field optics beyond the Abbe diffraction limit, such as microscope and telescope systems. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA.; Conventional optics is diffraction limited due to the cutoff of spatial frequency components, and evanescent waves allow subdiffraction optics at the cost of complex near-field manipulation. Recently, optical superoscillatory phenomena were employed to realize superresolution lenses in the far field, but suffering from very narrow working wavelength band due to the fragility of the superoscillatory light field. Here, an ultrabroadband superoscillatory lens (UBSOL) is proposed and realized by utilizing the metasurface-assisted law of refraction and reflection in arrayed nanorectangular apertures with variant orientations. The ultrabroadband feature mainly arises from the nearly dispersionless phase profile of transmitted light through the UBSOL for opposite circulation polarization with respect to the incident light. It is demonstrated in experiments that subdiffraction light focusing behavior holds well with nearly unchanged focal patterns for wavelengths spanning across visible and near-infrared light. This method is believed to find promising applications in superresolution microscopes or telescopes, high-density optical data storage, etc. Ultrabroadband optical superoscillatory lens and subdiffraction focusing in the far field are proposed and demonstrated with a plasmonic metasurface. The ultrabroadband feature mainly arises from the dispersionless phase profile across visible and near-infrared light wavelengths. This method is believed to provide a promising access to broadband far-field optics beyond the Abbe diffraction limit, such as microscope and telescope systems. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA.
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Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/6876
Collection微细加工光学技术国家重点实验室(开放室)
Corresponding AuthorLuo, Xiangang (lxg@ioe.ac.cn)
Affiliation State Key Lab of Optical Technologies on Nano-fabrication and Micro-engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, P.O. Box 350, Chengdu, China
Recommended Citation
GB/T 7714
Tang, Dongliang,Wang, Changtao,Zhao, Zeyu,et al. Ultrabroadband superoscillatory lens composed by plasmonic metasurfaces for subdiffraction light focusing[J]. Laser and Photonics Reviews,2015,9(6):713-719.
APA Tang, Dongliang.,Wang, Changtao.,Zhao, Zeyu.,Wang, Yanqin.,Pu, Mingbo.,...&Luo, Xiangang .(2015).Ultrabroadband superoscillatory lens composed by plasmonic metasurfaces for subdiffraction light focusing.Laser and Photonics Reviews,9(6),713-719.
MLA Tang, Dongliang,et al."Ultrabroadband superoscillatory lens composed by plasmonic metasurfaces for subdiffraction light focusing".Laser and Photonics Reviews 9.6(2015):713-719.
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