Realization of tunable spin-dependent splitting in intrinsic photonic spin Hall effect

被引：55

作者：

Ling, Xiaohui ^{[1
,2
,3
,4
]}

Yi, Xunong ^{[1
,2
]}

Zhou, Xinxing ^{[3
]}

Liu, Yachao ^{[3
]}

Shu, Weixing ^{[3
]}

Luo, Hailu ^{[1
,2
,3
]}

Wen, Shuangchun ^{[3
]}

机构：

[1] Shenzhen Univ, SZU NUS Collaborat Innovat Ctr Optoelect Sci & Te, Shenzhen 518060, Peoples R China

[2] Shenzhen Univ, Key Lab Optoelect Devices & Syst, Minist Educ & Guangdong Prov, Coll Optoelect Engn, Shenzhen 518060, Peoples R China

[3] Hunan Univ, Coll Phys & Microelect Sci, Lab Spin Photon, Changsha 410082, Hunan, Peoples R China

[4] Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421002, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 15期

基金：

中国国家自然科学基金;

关键词：

PANCHARATNAM-BERRY PHASE; ORBITAL ANGULAR-MOMENTUM; VECTOR BEAMS; LIGHT; METASURFACES;

D O I：

10.1063/1.4898190

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the realization of tunable spin-dependent splitting in intrinsic photonic spin Hall effect. By breaking the rotational symmetry of a cylindrical vector beam, the intrinsic vortex phases that the two spin components of the vector beam carries, which is similar to the geometric Pancharatnam-Berry phase, are no longer continuous in the azimuthal direction, and leads to observation of spin accumulation at the opposite edge of the beam. Due to the inherent nature of the phase and independency of light-matter interaction, the observed photonic spin Hall effect is intrinsic. Modulating the topological charge of the vector beam, the spin-dependent splitting can be enhanced and the direction of spin accumulation is switchable. Our findings may provide a possible route for generation and manipulation of spin-polarized photons, and enables spin-based photonics applications. (C) 2014 AIP Publishing LLC.

引用

页数：4

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