The propagation of electromagnetic waves via a one-dimensional periodic array of alternating dielectric and metal layers with periodically distributed optically activated inclusions of graphene is investigated inside a THz photonic pass band for different levels of optical activation of the graphene. On a particular example of a vacuum-aluminum nanostructure, it is shown that the presence of gain insertions can lead to a considerable increase in the transparency of dielectric-metal structures for electromagnetic radiation of the THz region. In this way one can achieve not only perfect transparency, but also significant amplification of incoming electromagnetic radiation within narrow frequency bands.
© 2017 Optical Society of America
OSA Recommended Articles
Equations on this page are rendered with MathJax. Learn more.