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1 August 2021 Identical metasurface simultaneously creates arbitrary assembly of polarization states via geometrical-scaling-induced phase modulations
Ruwen Peng, Ya-Jun Gao, Mu Wang
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Proceedings Volume 11796, Active Photonic Platforms XIII; 117961Q (2021) https://doi.org/10.1117/12.2593405
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States
Abstract
By introducing geometrical-scaling-induced phase modulations, we demonstrate in this work that an assembly of circularly polarized and linearly polarized states can be simultaneously generated by a single metasurface made of L-shaped resonators with different geometrical features. Each resonator of the metasurface diffracts either a right-handed or left-handed circular polarized states, with an additional phase modulation determined by its geometry features. The interaction of the diffracted fields leads to the desired output beams, where the polarization state and the propagation direction can be accurately controlled. As an example of potential applications, we show that an image can be encoded with different polarization profiles at different diffraction orders and decoded with a polarization analyzer. This approach resolves a challenging problem in integrated optics and is inspiring for on-chip quantum information processing.
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Ruwen Peng, Ya-Jun Gao, and Mu Wang "Identical metasurface simultaneously creates arbitrary assembly of polarization states via geometrical-scaling-induced phase modulations", Proc. SPIE 11796, Active Photonic Platforms XIII, 117961Q (1 August 2021); https://doi.org/10.1117/12.2593405
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KEYWORDS
Polarization
Phase modulation
Resonators
Integrated photonics
Optical components
Quantum computing
Quantum cryptography
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