Journal
OPTICS LETTERS
Volume 46, Issue 17, Pages 4092-4095Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.433332
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Funding
- Guangzhou Science and Technology Plan Project [202102020605]
- National Natural Science Foundation of China [61675092, 61705086, 62075088]
- Aviation Science Fund [201808W4001]
- Jinan Outstanding Young Scholar Support Program [JNSBYC-2020040, JNSBYC-2020117]
- Natural Science Foundation of Guangdong Province [2017A030313375, 2019B010138004, 2020B1515020024]
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A high-performance photonic spin Hall effect is demonstrated in an anisotropic epsilon-near-zero (ENZ) metamaterial based on the wave-vector-varying Pancharatnam-Berry phase, with strong spin-orbit coupling inducing separation of spin photons. The practical ENZ metamaterial proposed can still achieve a figure of merit of up to 0.006, providing an integrated and practical way for the development of spin photonic devices.
A high-performance photonic spin Hall effect is demonstrated in an anisotropic epsilon-near-zero (ENZ) metamaterial based on the wave-vector-varying Pancharatnam-Berry phase. The giant out-of-plane anisotropy of ENZ metamaterial induces strong spin-orbit coupling. With a small incident angle, photons with opposite spins mow along opposite transverse directions gradually. After transmitting through a submicrometer thick ENZ metamaterial, the spin photons are fully separated with a spin separation of 2.7 times beam waist and transmittance of 70.1%, allowing a figure of merit F up to 1.9. A practical ENZ metamaterial consisting of an Ag nanorod array is proposed, whose figure of merit is still up to 0.006. This high-performance photonic spin Hall effect provides an integrated and practical way for the development of spin photonic devices. (C) 2021 Optical Society of America
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