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Title: A close-ring pair terahertz metamaterial resonating at normal incidence
Authors: Gu, J.
Han, J. 
Lu, X.
Singh, R.
Tian, Z.
Xing, Q.
Zhang, W.
Issue Date: 2009
Citation: Gu, J., Han, J., Lu, X., Singh, R., Tian, Z., Xing, Q., Zhang, W. (2009). A close-ring pair terahertz metamaterial resonating at normal incidence. Optics Express 17 (22) : 20307-20312. ScholarBank@NUS Repository.
Abstract: We present a systematic study of a close-ring pair based freestanding metamaterial fabricated by double-layer, self-aligned photolithography. Terahertz time-domain spectroscopy transmission measurements and numerical simulations have revealed negative index of refraction in the frequency range of 0.66-0.90 THz under normal wave incidence. The observed resonance behaviors can be well explained by a theoretical circuit model. The electromagnetic properties and the figure of merit of such close-ring metamaterials are also explored in terms of geometrical parameters of the unit cell with a goal of providing optimized design for three-dimensional metamaterials and potential device applications. ©2009 Optical. Society of America.
Source Title: Optics Express
ISSN: 10944087
DOI: 10.1364/OE.17.020307
Appears in Collections:Staff Publications

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