The photonic spin Hall effect sensor
The photonic spin Hall effect sensor
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DOI：
10.1117/12.2272162
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发表时间：
2017-08
期刊：
影响因子：
--
通讯作者：
Linguo Xie;Zhiyou Zhang;Jinglei Du
中科院分区：
文献类型：
--
作者：
Linguo Xie;Zhiyou Zhang;Jinglei Du
在本文中，我们提出了一种替代的折射率传感方案的基础上的光子自旋霍尔效应（PSHE）。发现PSHE诱导的自旋分裂对布鲁斯特角附近的折射率变化（RIC）具有很高的敏感性，通过弱测量自旋分裂，可以估算出样品的折射率，精度可达10−5折射率单位（RIU）量级.与表面等离子体共振传感器相比，该方法不需要贵金属薄膜，并保持相同的灵敏度，这是一个低成本的替代折射率传感。
In this paper, we present an alternative refractive index sensing scheme based on the photonic spin Hall effect (PSHE). We find that the spin splitting induced by the PSHE shows high sensitivity to the refractive index change (RIC) around the Brewster angle.The refractive index of sample is estimated with a precision of the order of 10−5 refractive index unit (RIU) by measuring the spin splitting with weak measurements. Compared with the surface plasmon resonance sensor, this method does not require the noble metal film and keeps the same sensitivity, which is a low-cost alternative to refractive index sensing.