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Engineering the Phase Front of Light with Phase-Change Material Based Planar lenses
Chen, Yiguo; Li, Xiong; Sonnefraud, Yannick; Fernandez-Dominguez, Antonio I.; Luo, Xiangang; Hong, Minghui; Maier, Stefan A.
Source PublicationSCIENTIFIC REPORTS
Volume5Pages:8660
2015
Language英语
ISSN2045-2322
DOI10.1038/srep08660
Indexed BySCI
WOS IDWOS:000350300300005
Subtype期刊论文
AbstractA 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.; 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.
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Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/6884
Collection微细加工光学技术国家重点实验室(开放室)
Recommended Citation
GB/T 7714
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.
APA Chen, Yiguo.,Li, Xiong.,Sonnefraud, Yannick.,Fernandez-Dominguez, Antonio I..,Luo, Xiangang.,...&Maier, Stefan A..(2015).Engineering the Phase Front of Light with Phase-Change Material Based Planar lenses.SCIENTIFIC REPORTS,5,8660.
MLA Chen, Yiguo,et al."Engineering the Phase Front of Light with Phase-Change Material Based Planar lenses".SCIENTIFIC REPORTS 5(2015):8660.
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