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题名:
Engineering the Phase Front of Light with Phase-Change Material Based Planar lenses
作者: Chen, Yiguo1,2; Li, Xiong3; Sonnefraud, Yannick4; Fernandez-Dominguez, Antonio I.5; Luo, Xiangang3; Hong, Minghui2; Maier, Stefan A.1
刊名: SCIENTIFIC REPORTS
出版日期: 2015-03-02
卷号: 5
文章类型: Article
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.
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
关键词[WOS]: GE2SB2TE5 THIN-FILMS ; PLASMONIC LENS ; TRANSMISSION ; METAMATERIALS ; MICROLENSES ; RESONANCES ; SLITS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000350300300005
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/2537
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: 1.Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2AZ, England
2.Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore
3.Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Nanofabricat & Microeng, Chengdu 610209, Peoples R China
4.CNRS, Inst NEEL, F-38042 Grenoble 9, France
5.Univ Autonoma Madrid, Mat Condensada & Condensed Matter Phys Ctr IFIMAC, Dept Fis Teor, E-28049 Madrid, Spain

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.
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