Symmetry breaking induced anti-resonance in three dimensional sub-diffraction semiconducting grating

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	Symmetry breaking induced anti-resonance in three dimensional sub-diffraction semiconducting grating
	Cheng, F ; Li, BH ; Han, J ; Xiao, H ; Gu, CZ ; Qiu, XG
刊名	APPLIED PHYSICS LETTERS
	2013
卷号	102 期号:15
ISSN号	0003-6951
通讯作者	Cheng, F (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100190, Peoples R China.
中文摘要	A kind of three dimensional, sub-diffraction grating with converging-diverging channel working at terahertz regime has been developed on doped silicon wafers by wet etching. By introducing a geometric asymmetry to the vertical direction of the 3D grating, an anti-resonance is observed near the resonant wavelength of the surface plasmon polariton mode. Numerical simulations reveal that the surface waves propagating on the top and bottom surfaces are decoupled due to the symmetry breaking, which results in the destructive interference of electromagnetic field and thus the anti-resonance in the spectrum. It was also found that the bulk sensitivity of the 3D structure as a terahertz sensor can reach a value up to 8818%/RIU and a figure of merit up to 50. (C) 2013 AIP Publishing LLC [http://dx.doi.org/10.1063/1.4802726]
资助信息	National Basic Research Program of China [2009CB929102, 2011CBA00107, 2012CB921302]; National Science Foundation of China [10974241, 91121004]; Knowledge Innovation Program of CAS [KJCX2-EW-W02]
语种	英语
公开日期	2014-01-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/57535]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Cheng, F,Li, BH,Han, J,et al. Symmetry breaking induced anti-resonance in three dimensional sub-diffraction semiconducting grating[J]. APPLIED PHYSICS LETTERS,2013,102(15).
APA	Cheng, F,Li, BH,Han, J,Xiao, H,Gu, CZ,&Qiu, XG.(2013).Symmetry breaking induced anti-resonance in three dimensional sub-diffraction semiconducting grating.APPLIED PHYSICS LETTERS,102(15).
MLA	Cheng, F,et al."Symmetry breaking induced anti-resonance in three dimensional sub-diffraction semiconducting grating".APPLIED PHYSICS LETTERS 102.15(2013).