题名: Circular dichroism of graphene-based absorber in static magnetic field
作者: Wang, Min 1,2 ; Wang, Yanqin 1 ; Pu, Mingbo 1 ; Hu, Chenggang 1 ; Wu, Xiaoyu 1,2 ; Zhao, Zeyu 1 ; Luo, Xiangang 1
刊名: Journal of Applied Physics
出版日期: 2014
卷号: 115, 期号: 15, 页码: 154312 学科分类: Physical properties - Physics
DOI: 10.1063/1.4871674
通讯作者: Luo, X. (lxg@ioe.ac.cn)
文章类型: 期刊论文
中文摘要: Recently, the graphene-based absorber captures much attention due to its bright potential. In this paper, a modeling study of graphene-based absorber is made for variable magnetostatic bias, i.e., the magnetic circular dichroism (MCD). A strong MCD signal about DA = 0.94 is obtained in 7 T for a uniform graphene-based absorber. By periodically patterning subwavelength holes on the graphene, the structured absorber exhibits two obvious peaks induced by cavity resonance and localized resonance of meta-surface in 0 T, respectively. As the magnetic field increases, the absorption peaks show quite different electromagnetic response for the two kinds of circularly polarized lights. Two distinct MCDs signals of 0.711 at 2.02 THz and 0.91 at 2.49 THz in 7 T are observed. The results are well explained by a modified equivalent circuit model. © 2014 AIP Publishing LLC. 英文摘要: Recently, the graphene-based absorber captures much attention due to its bright potential. In this paper, a modeling study of graphene-based absorber is made for variable magnetostatic bias, i.e., the magnetic circular dichroism (MCD). A strong MCD signal about DA = 0.94 is obtained in 7 T for a uniform graphene-based absorber. By periodically patterning subwavelength holes on the graphene, the structured absorber exhibits two obvious peaks induced by cavity resonance and localized resonance of meta-surface in 0 T, respectively. As the magnetic field increases, the absorption peaks show quite different electromagnetic response for the two kinds of circularly polarized lights. Two distinct MCDs signals of 0.711 at 2.02 THz and 0.91 at 2.49 THz in 7 T are observed. The results are well explained by a modified equivalent circuit model. © 2014 AIP Publishing LLC. 收录类别: SCI
; Ei
项目资助者: 973 Program of China [2013CBA01700]
; National Natural Science Funds [61138002]
语种: 英语
WOS记录号: WOS:000335227100043
ISSN号: 00218979
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内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/6859
Appears in Collections: 微细加工光学技术国家重点实验室（开放室）_期刊论文
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作者单位: 1. State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academy of Science, P.O. Box 350, Chengdu 610209, China
Recommended Citation:
Wang, Min,Wang, Yanqin,Pu, Mingbo,et al. Circular dichroism of graphene-based absorber in static magnetic field[J]. Journal of Applied Physics,2014,115(15):154312.
