Giant photonic spin Hall effect in momentum space in a structured metamaterial with spatially varying birefringence

Xiaohui Ling; Xinxing Zhou; Xunong Yi; Weixing Shu; Yachao Liu; Shizhen Chen; Hailu Luo; Shuangchun Wen; Dianyuan Fan

doi:10.1038/lsa.2015.63

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Giant photonic spin Hall effect in momentum space in a structured metamaterial with spatially varying birefringence

Original Articles

- Giant photonic spin Hall effect in momentum space in a structured metamaterial with spatially varying birefringence
- Giant photonic spin Hall effect in momentum space in a structured metamaterial with spatially varying birefringence
- LSA 2015年4卷第2期
- Affiliations：
  
  1.Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
  2.Department of Physics and Electronic Information Science, Hengyang Normal University, Hengyang 421002, China
  3.SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, China
- Author bio：
  
  HL Luo, Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China Email: hailuluo@hnu.edu.cn
- Funds：
- DOI：10.1038/lsa.2015.63
  中图分类号：
- 纸质出版日期：2015-06，
  
  网络出版日期：2015-02-12，
  
  收稿日期：2014-09-28，
  
  修回日期：2015-01-29，
  
  录用日期：2015-02-05
- Accepted：
Scan QR Code
Giant photonic spin Hall effect in momentum space in a structured metamaterial with spatially varying birefringence[J]. LSA, 2015,4(2).

Ling, X. H. et al. Giant photonic spin Hall effect in momentum space in a structured metamaterial with spatially varying birefringence. Light: Science & Applications, 4, e290 (2015).
Giant photonic spin Hall effect in momentum space in a structured metamaterial with spatially varying birefringence[J]. LSA, 2015,4(2). DOI： 10.1038/lsa.2015.63.

Ling, X. H. et al. Giant photonic spin Hall effect in momentum space in a structured metamaterial with spatially varying birefringence. Light: Science & Applications, 4, e290 (2015). DOI： 10.1038/lsa.2015.63.

摘要

Abstract

The photonic spin Hall effect (SHE) in the reflection and refraction at an interface is very weak because of the weak spin-orbit interaction. Here

we report the observation of a giant photonic SHE in a dielectric-based metamaterial. The metamaterial is structured to create a coordinate-dependent

geometric Pancharatnam–Berry phase that results in an SHE with a spin-dependent splitting in momentum space. It is unlike the SHE that occurs in real space in the reflection and refraction at an interface

which results from the momentum-dependent gradient of the geometric Rytov–Vladimirskii–Berry phase. We theorize a unified description of the photonic SHE based on the two types of geometric phase gradient

and we experimentally measure the giant spin-dependent shift of the beam centroid produced by the metamaterial at a visible wavelength. Our results suggest that the structured metamaterial offers a potential method of manipulating spin-polarized photons and the orbital angular momentum of light and thus enables applications in spin-controlled nanophotonics.

关键词

Keywords

geometric phasemetamaterialphotonic spin Hall effect

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