title: Dynamical tuning between nearly perfect reflection, absorption, and transmission of light via graphene/dielectric structures.
abstract: Exerting well-defined control over the reflection (R), absorption (A), and transmission (T) of electromagnetic waves is a key objective in quantum optics. To this end, one often utilizes hybrid structures comprised of elements with different optical properties in order to achieve features such as high R or high A for incident light. A desirable goal would be the possibility to tune between all three regimes of nearly perfect reflection, absorption, and transmission within the same device, thus swapping between the cases R → 1, A → 1, and T → 1 dynamically. We here show that a dielectric interfaced with a graphene layer on each side allows for precisely this: by tuning only the Fermi level of graphene, all three regimes can be reached in the THz regime and below. Moreover, we show that the inclusion of cylindrical defects in the system offers a different type of control of the scattering of electromagnetic waves by means of the graphene layers.
authors.affiliation: Department of Physics, NTNU, Norwegian University of Science and Technology, N-7491 Trondheim, Norway.
authors.forename: Jacob
authors.initials: J
authors.lastname: Linder
authors.affiliation: Michelson Lab, Physics Division, Naval Air Warfare Center, China Lake, California 93555, USA.
authors.forename: Klaus
authors.initials: K
authors.lastname: Halterman