Enhancement and control of the Goos H?nchen shift by nonlinear surface plasmon resonance in graphene

• 来源期刊: 中国物理B（英文版）
• 关键词: Goos-H?nchen shift surface plasmon resonance nonlinear optics
• 年，卷（期）: 2018,（9）
• 页码范围: 131-136
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/9/094211

摘要

The Goos-H?nchen(GH)shift of graphene in the terahertz frequency range is investigated,and an extremely high GH shift is obtained owing to the excitation of surface plasmon resonance in graphene in the modified Otto configuration.It is shown that the GH shift can be positive or negative,and can be enhanced by introducing a nonlinearity in the substrate.Large and bistable GH shifts are demonstrated to be due to the hysteretic behavior of the reflectance phase.The bistable GH shift can be manipulated by changing the thickness of the air gap and the Fermi level or relaxation time of graphene.