Journal
ACS NANO
Volume 12, Issue 1, Pages 82-88Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.7b07379
Keywords
meta-lens; geometric phase; dynamic phase; spin-dependent splitting; spin-dependent focusing
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Funding
- National Natural Science Foundation of China [11274106, 11474089]
- China Scholarship Council [201606130065]
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Meta-lens represents a promising solution for optical communications and information processing owing to its miniaturization capability and desirable optical properties. Here, spin Hall meta lens is demonstrated to manipulate photonic spin-dependent splitting induced by spin orbital interaction in transverse and longitudinal directions simultaneously at visible wavelengths, with low dispersion and more than 90% diffraction efficiency. The broadband dielectric spin Hall meta-lens is achieved by integrating two geometric phase lenses with different functionalities into one single dynamic phase lens, which manifests the ultracompact, portable, and polarization-dependent features. The broadband spin Hall meta -lens may find important applications in imaging, sensing, and multifunctional spin photonics devices.
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