We present an efficient graphene-based photodetector with two Fabri-P\'erot cavities. It is shown that the absorption can reach almost 100% around a given frequency, which is determined by the two-cavity lengths. It is also shown that hysteresis in the absorbance is possible, with the transmittance amplitude of the mirrors working as an external driving field. The role of non-linear contributions to the optical susceptibility of graphene is discussed.
@article{arxiv.1201.3175,
title = {Efficient graphene-based photodetector with two cavities},
author = {A. Ferreira and N. M. R. Peres and R. M. Ribeiro and T. Stauber},
journal= {arXiv preprint arXiv:1201.3175},
year = {2012}
}
Comments
10 pages, 8 figures. published version: minor revision