https://doi.org/10.1140/epjp/s13360-023-04580-3
Regular Article
Tunable band structure in two-dimensional magnetized plasma photonic crystal for sensing applications in terahertz frequencies
Department of Physics, Payame Noor University, PO Box 19395-3697, Tehran, Iran
Received:
11
December
2022
Accepted:
10
October
2023
Published online:
26
October
2023
We study the tunable band structure of two-dimensional magnetized plasma photonic crystal by variation of the external magnetic field. The crystal is composed of silica (SiO2) in the background and titania (TiO2)- plasma rods with honeycomb lattice in a special arrangement. The modified plane wave expansion method is used to investigate photonic band gaps. A photonic gap map is plotted as the function of the external magnetic field in the range of 1 to 10 T accompanied by a band structure to show the correspondence. Results show that the external magnetic field can tune the photonic band gaps by influencing the dielectric function of plasma and producing appropriate dielectric contrast. An increase in the external magnetic field creates a great number of photonic band gaps and shifts them to higher frequencies. The relative bandwidths are also the function of the external magnetic field. They increase by increasing the external magnetic field. Our findings also show that the lattice constant at least should be in the range of millimeters to have a tunable band structure as the function of the external magnetic field. We can have tunable photonic band gaps in the terahertz frequency range by this special arrangement of plasma, SiO2, and TiO2 which are applicable in designing sensors.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
