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- Title
Transmission and Reflection Spectra of a Bragg Microcavity Filled with a Periodic Graphene-Containing Structure.
- Authors
Fedorova, Irina V.; Eliseeva, Svetlana V.; Sementsov, Dmitrij I.
- Abstract
The transmission and reflection spectra of a one-dimensional microresonator structure with dielectric Bragg mirrors, the working cavity of which is filled with several "dielectric-graphene" or "semiconductor-graphene" periods with controlled material parameters, were obtained using transfer matrices and numerical methods. Carrier drift in graphene monolayers is created to achieve amplification, which makes it possible to use the hydrodynamic approximation to represent graphene conductivity in the terahertz range. The transformation of spectra is achieved both by changing the energy state of the graphene monolayers and by changing the external magnetic field. It is shown that amplification is observed in the region where the real part of the conductivity is negative as the chemical potential (Fermi energy) increases, and the coefficients T and R become substantially greater than unity. The results of the work may be of interest to developers of graphene-based controlled photonic devices.
- Subjects
FERMI energy; TRANSFER matrix; CHEMICAL potential; MAGNETIC fields; GRAPHENE; TERAHERTZ materials
- Publication
Applied Sciences (2076-3417), 2023, Vol 13, Issue 13, p7559
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app13137559