DataVXAdvanced Optical MaterialsPaper
journal article·2024-07Open access

Topological broadband invisibility (Advanced Optical Materials 21/2024)

Yuang Pan, Li Zhang, Xuan Chen, Fujia Chen, Ning Han, Qiaolu Chen, Hongsheng Chen, Yihao Yang

Advanced Optical Materials· Volume 12· Issue 21
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Source abstract

Abstract

Topological Broadband Invisibility When an electromagnetic wave is incident onto an object, the resulting scattering reveals the object. An invisibility cloak can bend electromagnetic waves around objects, feasible only over narrow bandwidths. In article number 2400133, Li Zhang, Hongsheng Chen, Yihao Yang, and co-workers experimentally demonstrate that this bandwidth limitation can be overcome by positioning objects at topological nodes, characterized by minimal electromagnetic field amplitudes and indeterminate phases. This is accomplished using all-dielectric photonic crystal slabs, which are engineered to exhibit a pair of topological nodes at fixed planes across an extensive bandwidth.
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Research context

OpenAlex topics: Photonic and Optical Devices · Semiconductor Lasers and Optical Devices · Photonic Crystals and Applications

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Affiliations

State Key Laboratory of Extreme Photonics and Instrumentation ZJU‐Hangzhou Global Scientific and Technological Innovation Center Zhejiang University Hangzhou 310027 China

International Joint Innovation Center The Electromagnetics Academy at Zhejiang University Zhejiang University Haining 314400 China

Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang Jinhua Institute of Zhejiang University Zhejiang University Jinhua 321099 China

Shaoxing Institute of Zhejiang University Zhejiang University Shaoxing 312000 China

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