Journal
OPTICS EXPRESS
Volume 22, Issue 22, Pages 26487-26497Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.22.026487
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Funding
- National Natural Science Foundation of China [61177056, 61107055]
- Cultivation Fund of the Key Scientific and Technical Innovation Project, Ministry of Education of China [708038]
- Natural Science Foundation of Jiangsu Province [BK20141169]
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We present a double-layer graphene waveguide which can greatly enhance spontaneous emission rate (SER) of electric dipole emitter placed in it. With properly designed parameters, numerical results show that SER enhanced factors as high as 2.127 x 10(6) and 1.941 x 10(5) can be achieved for two different dipole moment orientations, respectively. The influences of waveguide thickness, existence of supporting layer and gating electrodes, location offset of the emitter and dipole moment orientation on spontaneous emission enhancement are also studied in this paper. To the best of our knowledge, this is the first numerical study of SER enhanced effect in complicated graphene structure. (C) 2014 Optical Society of America
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