Abstract
In this paper, the properties of tunable unidirectional absorption in one-dimensional (1D) plasma photonic crystals (PPCs) are theoretically investigated by the transfer matrix method. The PPCs are composed of dielectric layers and non-magnetized and magnetized plasma layers. The simulated results show that a unidirectional ultra-wideband absorption region (absorption rate is larger than 0.9) whose relative bandwidth is 36.2% can be obtained in the proposed 1D PPCs. The effects of the parameters of such PPCs on the features of the unidirectional absorption region (UAR) are also studied. The computed results illustrate that the obtained UARs can be tuned by those parameters as mentioned above, and also show us an alternative way to realize the reconfigurable unidirectional applications in the 1D PPCs.
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