期刊
OPTICS EXPRESS
卷 17, 期 19, 页码 16745-16749出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.17.016745
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资金
- 973 Program of China [2006CB302900]
- National Natural Science Foundation of China [60507014, 60528003, 60778018]
We theoretically investigate the electromagnetic response of mixed-size sub-wavelength square hole array (M-SHA) combined with thick metal layer (TML). Near-perfect absorption with bandwidth about 17nm is firstly observed. Field distribution and dispersion relationship indicate that mixed surface plasmons (M-SPs) coupling is supported by MSHA and TML. The absorption band is proved to be dominated by M-SPs coupling. (C) 2009 Optical Society of America
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