Journal
ADVANCED OPTICAL MATERIALS
Volume 5, Issue 20, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.201700413
Keywords
half-wave plate; high efficiency; manipulation; photonic spin Hall effect
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Funding
- National Key Research and Development Program of China [2016YFA0301102]
- Natural Science Foundation of China [11574163, 61378006]
- Program for New Century Excellent Talents in University [NCET-13-0294]
- Collaborative Innovation Center of Extreme Optics, Shan Xi University, Taiyuan, Shanxi, China
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The photonic spin Hall effect (PSHE) has attracted great interest of the scientific community because of the wide range of spin-controlled nanophotonics applications that it can provide. However, the PSHE is very weak in the reflection and refraction at an interface because of the extremely small spin-orbit interaction. Here, a significant photonic spin Hall effect is reported exhibiting over 70% efficiency in refraction by a gold-nanorod-based metasurface. Moreover, the spin-dependent wave-vector and beam-centroid shifts of the converted refracted waves can be manipulated effectively by changing the periodic length of the proposed metasurface and the transmission distance, respectively. The results suggest intriguing possibilities for manipulating photon spins and orbital angular momentum for applications in nanophotonics and optical communications.
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