Open AccessEnhanced spontaneous emission of mid-infrared dipole emitter in double-layer graphene waveguide
Author(s) -
Lu Sun,
Bin Tang,
Chun Jiang
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.026487
Subject(s) - common emitter , dipole , graphene , spontaneous emission , materials science , optics , moment (physics) , transition dipole moment , infrared , optoelectronics , waveguide , amplified spontaneous emission , electric dipole moment , physics , nanotechnology , laser , classical mechanics , quantum mechanics
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 × 10(6) and 1.941 × 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.