Impact of the incident light polarization on photonic spin splitting around the Brewster angle

Zirui Qin; Qinggang Liu; Chao Liu; Chong Yue; Yaopu Lang

doi:10.1117/12.2286291

12 January 2018 Impact of the incident light polarization on photonic spin splitting around the Brewster angle

Zirui Qin, Qinggang Liu, Chao Liu, Chong Yue, Yaopu Lang

Proceedings Volume 10622, 2017 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices; 1062208 (2018) https://doi.org/10.1117/12.2286291
Event: International Conference on Optical Instruments and Technology 2017, 2017, Beijing, China

Abstract

In this letter, we theoretically investigate the impact of the incident light polarization on photonic spin splitting induced by the photonic spin Hall effect when a linearly polarized Gaussian beam is reflected from an air-glass interface around the Brewster angle. We calculate the spin splitting shift as a function of the incident light polarization under different incident angles. We find that a tiny variation of the incident light polarization can result in a dramatic change of the spin splitting shift, and the highest sensitivity is up to 6.8 μm/deg . The largest splitting shift can reach 5.3 μm, which is larger than the previously reported values. We also find that the direction of spin accumulation of photons with different spin directions can be switched by adjusting the incident angle around the Brewster angle when the incident light polarization is near the p-polarization. These findings may be useful for precise polarization metrology and photon modulation.

Citation Download Citation

Zirui Qin, Qinggang Liu, Chao Liu, Chong Yue, and Yaopu Lang "Impact of the incident light polarization on photonic spin splitting around the Brewster angle", Proc. SPIE 10622, 2017 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices, 1062208 (12 January 2018); https://doi.org/10.1117/12.2286291

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