Tunable magneto-optical responses in a photonic crystal containing two plasma defect layers

Abstract

The magneto-optical responses of a one-dimensional photonic crystal containing two magnetized plasma defect layers with operation in the millimeter wavelength region are studied by using a 4 × 4 transfer matrix method and full wave numerical simulation. The results of this study show that not only the values of the magneto-optical effects such as Kerr and Faraday rotations are tunable by the magnetic field and plasma layer parameters but also the positions of resonant modes in the frequency region are adjustable by these parameters. Also, it is found out that the repetition numbers of middle and surrounding unit cells in the structure can be considered to be other key factors for tuning the characteristics of resonant modes and magneto-optical responses related to them.

Surface plasmon polaritons in plasma-dielectric-magnetic plasma structure

“…In the last decade, plasmas have attracted considerable attention in plasma photonic crystals [12][13][14][15][16][17][18][19][20][21][22] and plasma metamaterials [23][24][25] due to their tunable properties offering some peculiar advantages. Since plasmas have dominant advantages when comparing with other ordinary materials, the applied power supply for generating plasmas and tuning the gas pressure or temperature of plasmas can be used to control the dynamic change of permittivity and calibrate the amplitude on the complex plane; we have solid reasons to believe that these artificially engineered composites involved with or replaced by plasmas can exhibit superior properties, which lead to many interesting phenomena as well as important applications.…”

Tunable enhanced Faraday rotation in a defected plasma photonic crystal under external magnetic field with different declinations

“…Also, the structure is completely novel because in this structure thickness of each dielectric layer is functioned by refractive indices of other dielectric layers. Unlike conventional magneto photonic crystals in which achieving high Faraday rotation in high transmittance is not feasible [9,10], this structure tackles this problem and provides a high Faraday rotation in a high transmittance of the incident wave. Since the thickness of the plasma layer used in this work is not big (2.5 mm) creation of a uniform plasma with in this size range will not be a challenge in experimental applications.…”

“…This structure can be used for distinguishing, filtering, and isolation of CPs and have good potential in many applications, such as isolators, circulators, sensors, Faraday rotators, magneto-optical imaging [36][37][38][39]. In addition, it, due to its nonreciprocal properties, can be used to construct optical diodes that can transmit light in one direction and prevent its propagation in the reverse direction, as optical switchers [9].…”

“…The properties of the initial interface layer of the photonic crystal and the formation of surface modes upon it were analysed by Shukla et al [7]. Several studies have been conducted involving photonic crystals with multiple bandgaps, which describe the ability to extend the effective bandgap by overlapping smaller bandgaps to restrict the propagation of a larger range of EM wave frequencies [8][9][10]. Regarding the structure of the crystal, the consistency in the arrangement of the layers creates periodicity within the structure, and this periodicity is also achieved by alternating the layers in multiple dimensions, for example in two dimensions, which has been previously studied by Sakai et al [11].…”

An active tunable Fano switch in a plasma-filled superlattice array

“…This means that plasma-filled tunable devices can be designed without a dependency on changes in geometric parameters. Active and reconfigurable plasma-filled devices have been realized by controlling the physical characteristics of the external magnetic field [6], voltage [7], current [8], gas pressure and other parameters [9]. Consequently, plasma photonic crystals (PPCs) have attracted increased research interest in the case of one-, two-and threedimensional systems [3,[10][11][12][13].…”