Graphene-based solid state devices capable of emitting electromagnetic radiation and improvements thereof

A solid state device capable of emitting electromagnetic radiation, comprising:

• a gate layer capable of controlling electron density in one or more upper layers;
• a first dielectric layer disposed directly adjacent to the gate layer;
• a graphene layer disposed adjacent to the at least one first dielectric layer;
• a source disposed adjacent to, and in electrical communication with, the graphene layer;
• a drain disposed adjacent to, and in electrical communication with the graphene layer, wherein the source and the drain are disposed at distal ends of the graphene layer, wherein application of an electromotive force between the source and drain gives rise to an electrical current in the graphene layer;
• an alternating magnetic field source disposed proximate to the at least one graphene layer, wherein operation of the alternating magnetic field source gives rise to an alternating magnetic field oriented substantially perpendicular to the graphene layer, wherein said alternating magnetic field is capable of being operatively coupled to said electrical current to give rise the electromagnetic radiation produced from the graphene layer;
• and
• a front filter disposed proximate to the drain;
• wherein the front filter is disposed directly adjacent to one or more dielectric layers, wherein at least one of the dielectric lavers is disposed directly adjacent to the drain and the front filter,
• wherein the dielectric layer disposed directly adjacent to the drain and the front filter is characterized as having a thickness that provides an integer number a wavelengths spacing between the mirror and filter to for a cavity to create a resonate cavity.