Journal
NATURE COMMUNICATIONS
Volume 10, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-019-12637-0
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Funding
- National Research Foundation, Prime Minister's Office, Singapore [NRF CRP15-2015-03]
- National Natural Science Foundation of China (NSFC) [61522504]
- Guangdong Provincial Innovation and Entrepreneurship Project [2016ZT06D081]
- Air Force Office of Scientific Research [MURI FA9550-14-1-0389, FA9550-16-1-0156]
- King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) [OSR-2016-CRG5-2995]
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Metasurfaces as artificially nanostructured interfaces hold significant potential for multifunctionality, which may play a pivotal role in the next-generation compact nano-devices. The majority of multi-tasked metasurfaces encode or encrypt multi-information either into the carefully tailored metasurfaces or in pre-set complex incident beam arrays. Here, we propose and demonstrate a multi-momentum transformation metasurface (i.e., meta-transformer), by fully synergizing intrinsic properties of light, e.g., orbital angular momentum (OAM) and linear momentum (LM), with a fixed phase profile imparted by a metasurface. The OAM meta-transformer reconstructs different topologically charged beams into on-axis distinct patterns in the same plane. The LM meta-transformer converts red, green and blue illuminations to the on-axis images of R, G and B as well as vivid color holograms, respectively. Thanks to the infinite states of light-metasurface phase combinations, such ultra-compact meta-transformer has potential in information storage, nanophotonics, optical integration and optical encryption.
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