Switching the direction of spin accumulation in the spin Hall effect of light by adjusting the optical axis of an uniaxial crystal

doi:10.1088/1674-1056/22/3/034101

Abstract We theoretically and experimentally investigate a switchable spin Hall effect (SHE) of light in reflection near the Brewster angle at an air–uniaxial crystal interface. We find a large transverse spin splitting near the Brewster angle, whose sign can be altered by rotating the optical axis. As an analogy of the SHE in an electronic system, a switchable spin accumulation in the SHE of light is detected. We are able to switch the direction of the spin accumulation by adjusting the optical axis angle of the uniaxial crystal. These findings may give opportunities for photon spin manipulating and developing a new generation of nano-photonic devices.

Keywords: spin Hall effect of light spin accumulation uniaxial crystal transverse displacement

Received: 31 October 2012
Revised: 12 November 2012
Accepted manuscript online:

PACS:	41.20.Jb	(Electromagnetic wave propagation; radiowave propagation)
	42.25.Dd	(Wave propagation in random media)
	42.79.-e	(Optical elements, devices, and systems)

Fund: Project supported by the National Natural Science Foundation of China (Grants Nos. 61025024 and 11074068) and the Hunan Provincial Natural Science Foundation of China (Grant No. 12JJ7005).

Corresponding Authors: Luo Hai-Lu
E-mail: hailuluo@hnu.edu.cn

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Tang Ming (唐明), Zhou Xin-Xing (周新星), Xiao Zhi-Cheng (肖志成), Luo Hai-Lu (罗海陆), Wen Shuang-Chun (文双春) Switching the direction of spin accumulation in the spin Hall effect of light by adjusting the optical axis of an uniaxial crystal 2013 Chin. Phys. B 22 034101

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Switching the direction of spin accumulation in the spin Hall effect of light by adjusting the optical axis of an uniaxial crystal

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