Multistate Switching of Photonic Angular Momentum Coupling in Phase-Change Metadevices | |
Zhang, Fei1,3; Xie, Xin1,2; Pu, Mingbo1,2; Guo, Yinghui1,2; Ma, Xiaoliang1,2; Li, Xiong1,2; Luo, Jun1; He, Qiong1; Yu, Honglin3; Luo, Xiangang1,2 | |
刊名 | Advanced Materials |
2020-10-01 | |
卷号 | 32期号:39页码:1908194-1-9 |
关键词 | Ge(2)Sb(2)Te(5)Alloy Gst Metasurfaces Phase-change Materials Spin-orbit Interactions |
ISSN号 | 0935-9648 |
DOI | 10.1002/adma.201908194 |
文献子类 | 期刊论文 |
英文摘要 | The coupling between photonic spin and orbital angular momenta is significantly enhanced at the subwavelength scale and has found a plethora of applications in nanophotonics. However, it is still a great challenge to make such kind of coupling tunable with multiple sates. Here, a versatile metasurface platform based on polyatomic phase-change resonators is provided to realize multiple-state switching of photonic angular momentum coupling. As a proof of concept, three coupling modes, namely, symmetric coupling, asymmetric coupling, and no coupling, are experimentally demonstrated at three different crystallization levels of structured Ge2Sb2Te5 alloy. In practical applications, coded information can be encrypted in asymmetric mode using the spin degree of freedom, while revealing misleading one without proper phase change or after excessive crystallinity. With these findings, this study may open an exciting direction for subwavelength electromagnetics with unprecedented compactness, allowing to envision applications in active nanophotonics and information security engineering. © 2020 Wiley-VCH GmbH |
出版地 | WEINHEIM |
WOS关键词 | Band Achromatic Metalens ; Optical-properties |
WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
语种 | 英语 |
出版者 | WILEY-V C H VERLAG GMBH |
WOS记录号 | WOS:000563143500001 |
内容类型 | 期刊论文 |
源URL | [http://ir.ioe.ac.cn/handle/181551/10023] |
专题 | 光电技术研究所_微细加工光学技术国家重点实验室(开放室) |
作者单位 | 1.State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China; 2.School of Optoelectronics, University of Chinese Academy of Sciences, Beijing; 100049, China 3.Key Laboratory of Optoelectronic Technology and System, Ministry of Education, Chongqing University, Chongqing; 400030, China; |
推荐引用方式 GB/T 7714 | Zhang, Fei,Xie, Xin,Pu, Mingbo,et al. Multistate Switching of Photonic Angular Momentum Coupling in Phase-Change Metadevices[J]. Advanced Materials,2020,32(39):1908194-1-9. |
APA | Zhang, Fei.,Xie, Xin.,Pu, Mingbo.,Guo, Yinghui.,Ma, Xiaoliang.,...&Luo, Xiangang.(2020).Multistate Switching of Photonic Angular Momentum Coupling in Phase-Change Metadevices.Advanced Materials,32(39),1908194-1-9. |
MLA | Zhang, Fei,et al."Multistate Switching of Photonic Angular Momentum Coupling in Phase-Change Metadevices".Advanced Materials 32.39(2020):1908194-1-9. |
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