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作 者:Dongyi Wang Feifei Liu Tong Liu Shulin Sun Qiong He Lei Zhou
机构地区:[1]State Key Laboratory of Surface Physics,Key Laboratory of Micro and Nano Photonic Structures(Ministry of Education)and Department of Physics,Fudan University,Shanghai,China [2]Shanghai Engineering Research Centre of Ultra-Precision Optical Manufaauring,Green Photonics and Department of Optical Science and Engineering,Fudan University,Shanghai,China [3]Academy for Engineering and Technology,Fudan University,Shanghai,China [4]Collabo rative Innovation Centre of Advanced Microstructures,Nanjing,China
出 处:《Light(Science & Applications)》2021年第4期681-694,共14页光(科学与应用)(英文版)
基 金:the National Key Research and Development Program of China(Nos.2017YFA0303504,2017YFA0700201 and 2020YFA0710100);National Natural Science Foundation of China(Nos.11734007,91850101,11674068,11874118 and 62005197);Natural Science Foundation of Shanghai(Nos.18ZR1403400 and 20JC1414601);Fudan University-CIOMP Joint Fund(No.FC2018-006).L.Zhou and Q.He acknowledge technical support from the Fudan Nanofabrication Laboratory for sample fabrication.
摘 要:Vectorial optical fields(VOFs)exhibiting arbitrarily designed wavefronts and polarization distributions are highly desired in photonics.However,current methods to generate them either require complicated setups or exhibit limited functionalities,which is unfavorable for integration-optics applications.Here,we propose a generic approach to efficiently generate arbitrary VOFs based on metasurfaces exhibiting full-motrix yet inhomogeneous Jones-matrix distributions.We illustrate our strategy with analytical calculations on a model system and an experimental demonstration of a meta-device that can simultaneously deflect light and manipulate its polarization.Based on these benchmark results,we next experimentally demonstrate the generation of a far-field VOF exhibiting both a vortex wavefront and an inhomogeneous polarization distribution.Finally,we design/fabricate a meta-device and experimentally demonstrate that it can generate a complex near-field VOF-a cylindrically polarized surface plasmon wave possessing orbital angular momentum-with an efficiency of-34%.Our results establish an efficient and ultracompact platform for generating arbitrary predesigned VOFs in both the near-and far-fields,which may find many applications in optical manipulation and communications.
关 键 词:ARBITRARY INHOMOGENEOUS GENERATING
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