期刊
OPTICS EXPRESS
卷 27, 期 10, 页码 13884-13894出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.27.013884
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资金
- National Natural Science Foundation of China [11847026, 61764005, 11804093]
- Scientific Project of Jiangxi Education Department of China [GJJ160532]
- Graduate Education Reform Project of Jiangxi Province of China [JXYJG-2017-080]
Dual plasmon-induced transparency (PIT) and plasmon-induced absorption (PIA) are simultaneously achieved in an integrated metamaterial composed of single layer of graphene. Electric field distribution and coupled mode theory (CMT) are used to demonstrate the physical mechanism of dual PIT and PIA, and the theoretical result of CMT is highly consistent with the finite-difference time-domain (FDTD) method simulation result. Further research shows that both the dual PIT and PIA phenomenon can be effectively modulated by the Fermi level, the carrier mobility of the graphene and the refractive index of the surrounding environment. It is meaningful that the absorption of the dual PIA spectrum can be abruptly increased to 93.5% when the carrier mobility of graphene is 0.8m(2)/Vs. In addition, the group index can be as high as 328. Thus, our work can pave new way for developing excellent slow-light and light absorption functional devices. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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