期刊
CHINESE OPTICS LETTERS
卷 17, 期 2, 页码 -出版社
OSA-OPTICAL SOC
DOI: 10.3788/COL201917.020007
关键词
-
类别
资金
- National Natural Science Foundation of China [11704119, 11647135, 11474090, 11704259]
- Natural Science Foundation of Hunan Province [2018JJ3325, 14JJ6007, 2018JJ3557]
- Scientific Research Fund of Hunan Provincial Education Department [17C0945, 17B160, 17B025]
In this Letter, we have shown that a giant Goos-Hanchen shift of a light beam reflected at terahertz frequencies can be achieved by using a composite structure, where monolayer graphene is coated on one-dimensional photonic crystals separated by a dielectric slab. This giant Goos-Hanchen shift originates from the enhancement of the electrical field, owing to the excitation of optical Tamm states at the interface between the graphene and one-dimensional photonic crystal. It is shown that the Goos-Hanchen shift in this structure can be significantly enlarged negatively and can be switched from negative to positive due to the tunability of graphene's conductivity. Moreover, the Goos-Hanchen shift of the proposed structure is sensitive to the relaxation time of graphene and the thickness of the top layer, making this structure a good candidate for a dynamic tunable optical shift device in the terahertz regime.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据