Graphene electronics and photonics (Invited)
Tony Low
ASICON 2013
Hexagonal boron nitride (hBN) is a natural hyperbolic material, which can also accommodate highly dispersive surface phonon-polariton modes. In this paper, we examine theoretically the mid-infrared optical properties of graphene-hBN heterostructures derived from their coupled plasmon-phonon modes. We find that the graphene plasmon couples differently with the phonons of the two Reststrahlen bands, owing to their different hyperbolicity. This also leads to distinctively different interaction between an external quantum emitter and the plasmon-phonon modes in the two bands, leading to substantial modification of its spectrum. The coupling to graphene plasmons allows for additional gate tunability in the Purcell factor and narrow dips in its emission spectra.
Tony Low
ASICON 2013
Hugen Yan, Tony Low, et al.
Nature Photonics
Xiaoxia Yang, Zhipei Sun, et al.
Advanced Materials
Wenjuan Zhu, Tony Low, et al.
Nano Letters