TY - JOUR
T1 - Meta-microwindmill structure with multiple absorption peaks for the detection of ketamine and amphetamine type stimulants in terahertz domain
AU - Cao, Shun
AU - Yu, Weixing
AU - Wang, Taisheng
AU - Shen, Honghai
AU - Han, Xudong
AU - Xu, Wenbin
AU - Zhang, Xuming
PY - 2014/1/1
Y1 - 2014/1/1
N2 - We report a metamaterial based microwindmill array with a periodic arrangement that can be used in terahertz detector as an absorbing layer. It is found that this structure can absorb terahertz waves efficiently with an average absorptivity of 95% at multiple frequencies of 1.516, 2.205, 2.424 and 2.565 THz, which are absorption peaks of four kinds of drugs. The efficient absorbing property of meta-microwindmill on terahertz wave can be explained in terms of the synergetic effects of localized surface plasmon resonant effect and slow light mode. Moreover, the effect of the error of the structural parameters on the absorption efficiency is carefully analyzed in detail to guide the fabrication.
AB - We report a metamaterial based microwindmill array with a periodic arrangement that can be used in terahertz detector as an absorbing layer. It is found that this structure can absorb terahertz waves efficiently with an average absorptivity of 95% at multiple frequencies of 1.516, 2.205, 2.424 and 2.565 THz, which are absorption peaks of four kinds of drugs. The efficient absorbing property of meta-microwindmill on terahertz wave can be explained in terms of the synergetic effects of localized surface plasmon resonant effect and slow light mode. Moreover, the effect of the error of the structural parameters on the absorption efficiency is carefully analyzed in detail to guide the fabrication.
UR - http://www.scopus.com/inward/record.url?scp=84906812033&partnerID=8YFLogxK
U2 - 10.1364/OME.4.001876
DO - 10.1364/OME.4.001876
M3 - Journal article
SN - 2159-3930
VL - 4
SP - 1876
EP - 1884
JO - Optical Materials Express
JF - Optical Materials Express
IS - 9
ER -