arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1607.03530physics.opticscond-mat.mes-hall
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用光控制光学自旋霍尔效应

Controlling the optical spin Hall effect with light

O. Lafont, M. H. Luk, P. Lewandowski, N. H. Kwong, K. P. Chan, M. Babilon, P. T. Leung, E. Galopin, A. Lemaitre, J. Tignon, S. Schumacher, E. Baudin, R. Binder

摘要:

光学自旋霍尔效应(OSHE)是激子极化激元在半导体微腔中的输运现象,它是由极化激元的自旋轨道相互作用引起的,导致自旋织构的形成。在半导体腔中,横电横磁模分裂产生的有效磁场是自旋轨道耦合的物理基础。自旋织构可以在近场(极化激元的局部自旋分布)中观察到,并且作为光偏振图案在更容易观察到的远场中观察到。对于自旋光电子器件的未来应用,需要一种简单而鲁棒的控制机制,该机制在固定入射光强度和远场偏振图案之间建立一一对应关系。我们提出了这样的控制方案,这是可能的一个特定的双微腔设计。

英文摘要:

The optical spin Hall effect (OSHE) is a transport phenomenon of exciton polaritons in semiconductor microcavities, caused by the polaritonic spin-orbit interaction, that leads to the formation of spin textures. In the semiconductor cavity, the physical basis of the spin orbit coupling is an effective magnetic field caused by the splitting of transverse-electric and transverse-magnetic (TE-TM) modes. The spin textures can be observed in the near field (local spin distribution of polaritons), and as light polarization patterns in the more readily observable far field. For future applications in spinoptronic devices, a simple and robust control mechanism, which establishes a one-to-one correspondence between stationary incident light intensity and far-field polarization pattern, is needed. We present such a control scheme, which is made possible by a specific double-microcavity design.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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