Nonreciprocal waveguiding structures for THz region based on InSb

0484765 - ÚFE 2018 RIV US eng J - Článek v odborném periodiku
Kwiecien, P. - Richter, I. - Kuzmiak, Vladimír - Čtyroký, Jiří
Nonreciprocal waveguiding structures for THz region based on InSb.
Journal of the Optical Society of America A. Roč. 34, č. 6 (2017), s. 892-903. ISSN 1084-7529. E-ISSN 1520-8532
Grant CEP: GA ČR(CZ) GA16-00329S
Institucionální podpora: RVO:67985882
Klíčová slova: Guided waves * Magneto-optical materials * Plasmonics
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 1.566, rok: 2017

We have studied theoretically and numerically surface magnetoplasmons in three types of THz guiding structures, namely, InSb/dielectric planar boundary, InSb/air/metal planar waveguide, and symmetric InSb/air/InSb planar waveguide, in the presence of an external magnetic field. We consider the Voigt magneto-optic configuration in which these structures provide a frequency range where only one propagation direction is allowed to support one-way propagation of the surface plasmon polariton, due to nonreciprocity of the structures. To study the dispersion properties associated with unidirectional propagation of magnetoplasmons in finite-size nanostructured waveguides, we have developed an efficient two-dimensional numerical technique based on the magnetooptic aperiodic rigorous coupled-wave analysis. We have shown that the one-way bandwidth can be controlled by an external magnetic field and by the permittivity and thickness of the dielectric guiding layer. To enable numerical simulation, we have utilized the configuration in which the magnetized section of a waveguide is along the direction of propagation sandwiched by the identical waveguide segments without a magnetic field. We have also shown that the one-way bandwidth can be controlled by an external magnetic field and by the permittivity and thickness of the dielectric guiding layer
Trvalý link: http://hdl.handle.net/11104/0279907