The absorbing properties of one-dimensional plasma photonic crystals

Abstract

Using the transfer matrix method, absorbing properties of electromagnetic waves in one-dimensional plasma photonic crystals are proposed. Compared with the absorption of bulk plasma, more absorbing bands have been found in one-dimensional plasma photonic crystals, and the first absorbing band appears below the plasma frequency. These absorbing bands can be controlled by varying structure parameters, plasma parameters and the incident angle. Results show that the periodic number and collision frequency only control the absorbing magnitude. Plasma frequency, plasma thickness and incident angle affect both the absorbing magnitude and locations. Increasing the dielectric constant of the dielectric makes more absorbing bands appear. These features of one-dimensional plasma photonic crystals would have potential applications in tunable millimetre absorbers.

A theoretical study based on coherent perfect absorption and polarization separation in one-dimensional magnetized plasma photonic crystals

“…Research regarding photonic crystals (PCs) has increased due to their ability to exhibit photonic band gaps [1][2][3] that are similar to those observed in semiconductor materials. 4,5 This property has inspired researchers to explore the integration of various advanced materials, including plasma, [6][7][8] into PCs. Periodic arrangements of dielectric components may guide the propagation of electromagnetic waves with frequencies below the plasma frequency within the plasma.…”

The electromagnetic wave modulation based on single-frequency reflection in absorption with angle stability of hyperbolic metamaterials

“…On the other hand, due to the plasma collision frequency (the frequency of energy exchange between electrons and ions in the plasma), there is an energy exchange and loss inside the plasma. Rationally changing the plasma collision frequency, it can be regarded as a better absorbing material [23]. In our previous research work [24], 1D PPCs composed of dielectric layers, non-magnetized and magnetized plasma layers were designed, and an ultrawideband tunable unidirectional absorption was achieved.…”