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题名:
Engineering the Phase Front of Light with Phase-Change Material Based Planar lenses
作者: Chen, Yiguo; Li, Xiong; Sonnefraud, Yannick; Fernandez-Dominguez, Antonio I.; Luo, Xiangang; Hong, Minghui; Maier, Stefan A.
刊名: SCIENTIFIC REPORTS
出版日期: 2015
卷号: 5, 页码:8660
学科分类: GE2SB2TE5 THIN-FILMS; PLASMONIC LENS; TRANSMISSION; METAMATERIALS; MICROLENSES; RESONANCES; SLITS
DOI: 10.1038/srep08660
文章类型: 期刊论文
中文摘要: A novel hybrid planar lens is proposed to engineer the far-field focusing patterns. It consists of an array of slits which are filled with phase-change material Ge2Sb2Te5 (GST). By varying the crystallization level of GST from 0% to 90%, the Fabry-Perot resonance supported inside each slit can be spectrally shifted across the working wavelength at 1.55 mu m, which results in a transmitted electromagnetic phase modulation as large as 0.56 pi. Based on this geometrically fixed platform, different phase fronts can be constructed spatially on the lens plane by assigning the designed GST crystallization levels to the corresponding slits, achieving various far-field focusing patterns. The present work offers a promising route to realize tunable nanophotonic components, which can be used in optical circuits and imaging applications.
英文摘要: A novel hybrid planar lens is proposed to engineer the far-field focusing patterns. It consists of an array of slits which are filled with phase-change material Ge2Sb2Te5 (GST). By varying the crystallization level of GST from 0% to 90%, the Fabry-Perot resonance supported inside each slit can be spectrally shifted across the working wavelength at 1.55 mu m, which results in a transmitted electromagnetic phase modulation as large as 0.56 pi. Based on this geometrically fixed platform, different phase fronts can be constructed spatially on the lens plane by assigning the designed GST crystallization levels to the corresponding slits, achieving various far-field focusing patterns. The present work offers a promising route to realize tunable nanophotonic components, which can be used in optical circuits and imaging applications.
收录类别: SCI
项目资助者: National Research Foundation, Prime Minister's Office, Singapore under its Competitive Research Program (CRP) [NRF-CRP10-2012-04] ; Leverhulme trust ; EPSRC Active Plasmonics Programme ; 973 Program of China [2013CBA01700] ; Chinese Nature Science Grant [61138002, 61307043]
语种: 英语
WOS记录号: WOS:000350300300005
ISSN号: 2045-2322
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/6884
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Recommended Citation:
Chen, Yiguo,Li, Xiong,Sonnefraud, Yannick,et al. Engineering the Phase Front of Light with Phase-Change Material Based Planar lenses[J]. SCIENTIFIC REPORTS,2015,5:8660.
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