Fig. 4: Local density of states (LDOS) enhancement spatial map and polarization map.
From: An electroluminescent and tunable cavity-enhanced carbon-nanotube-emitter in the telecom band
a The simulated LDOS enhancement spatial map of emitted electroluminescence (EL) on resonance from a semiconducting carbon nanotube (sCNT) placed between nanocrystalaline graphene (NCG) electrodes in a cross-bar photonic crystal (PhC) cavity. The PhC contains N = 25 holes in each Bragg mirror with a lattice period of a = 462 nm. The emitter is positioned in the cavity center and varied along the longitudinal direction. The position of the source along the x-direction is plotted normalized to the period a. b Spectra of EL emission detected at a three-dimensional (3D) coupler C, projected onto different polarization angles. The white dashed line marks the polarization axis of all experimentally acquired spectra.
