Abstract

In modern optics, there are two general models to describe the behavior of light in graphene: the zero-thickness model and the slab model. The difference in physical phenomena predicted by the two models is very small, which is hardly distinguished by traditional measurement methods. Therefore, which model can describe the light–matter interaction in graphene more exactly is still a challenging issue. In this work, based on the sensitive optical phenomenon called the photonic spin Hall effect, the small difference can be magnified to a detectable level by the weak-value amplification. The experimental results show that the zero-thickness model can more accurately describe the interaction between light and monolayer or bilayer graphene, while the case of more than two layers, which can no longer be regarded as two-dimensional thickness, should be described by the slab model. Our results may provide information on light interacting with graphene for future investigation in photonics and optoelectronics.

© 2022 Optica Publishing Group

Wide-range electrically tunable photonic spin Hall effect in a quasi-PT-symmetric structure

Jin Yang, Shuaijie Yuan, Qianyang Li, Yu Chen, and Xinxing Zhou
Opt. Lett. 47(19) 4957-4960 (2022)

Photonic spin Hall effect in twisted bilayer graphene

Zefeng Chen, Hongwei Yang, Yihong Xiao, Jintao Pan, Yu Xia, and Wenguo Zhu
J. Opt. Soc. Am. A 38(8) 1232-1236 (2021)

Tunable spin Hall effect of light with graphene at a telecommunication wavelength

Xiangxing Bai, Linlong Tang, Wenqiang Lu, Xingzhan Wei, Shuang Liu, Yang Liu, Xiudong Sun, Haofei Shi, and Yueguang Lu
Opt. Lett. 42(20) 4087-4090 (2017)

Role of in-plane shift in reconstructing the photonic spin Hall effect

Lijuan Sheng, Xinxing Zhou, Yu Chen, Hong Zhang, and Zhiyou Zhang
Opt. Lett. 47(18) 4778-4781 (2022)

Enhanced photonic spin Hall effect via singularity induced by destructive interference

Zhihao Chen, Shuai Lin, Jiahao Hong, Lijuan Sheng, Yu Chen, and Xinxing Zhou
Opt. Lett. 46(19) 4883-4886 (2021)