材料科学
栅栏
电介质
石墨烯
极化(电化学)
单层
激发态
光电子学
光学
表面等离子体激元
极化子
等离子体子
表面等离子体子
纳米技术
物理
原子物理学
化学
物理化学
作者
Jun Zhou,Pengya Hu,Qi Song,Dekang Yin,Haixia Da
出处
期刊:Physica Scripta
[IOP Publishing]
日期:2023-02-14
卷期号:98 (3): 035521-035521
被引量:3
标识
DOI:10.1088/1402-4896/acbbf8
摘要
Abstract The sensitivity of Goos-Hänchen (GH) shifts on the geometric parameters of the structures suggest their great application prospects in sensing and detection. However, most of the enhanced GH shifts are achieved under either the transverse electric (TE) wave or transverse magnetic (TM) polarized wave. Here, we theoretically demonstrate that the well-designed metal-dielectric grating structure with monolayer graphene has the potential for realizing the enhanced GH shifts under both the TE and TM polarized waves at the same specific wavelength, which is dramatically different from the previous works and suggests that the enhancement of the GH shift is polarization independent. In particular, the enhancement of the GH shift obtained in this structure under the TE polarized wave is caused by the excited guided mode resonance in the dielectric layers of the grating strip. Moreover, the enhancement of the GH shift under the TM polarized wave is mainly due to the excited surface plasmon polariton at the interface between the dielectric layer and the metal layer in the top of grating strip. We also find that the size and sign of the GH shift can be controlled by the chemical potential of monolayer graphene and the geometric parameters of this structure. The highly controllable and polarization independent GH shift in the metal-dielectric grating structure with monolayer graphene paves the way for the future applications in the polarization independent devices, such as, optical sensors, optical switches and so on.
科研通智能强力驱动
Strongly Powered by AbleSci AI