一维磁化等离子体光子晶体非互易特性研究

Nonreciprocal properties of one-dimensional magnetized plasma photonic crystals

在理想条件下,为了研究等离子体回旋频率、等离子体频率、等离子体层厚度、周期常数和入射角在TM模式下对一维磁化等离子体光子晶体的非互易特性的影响,用利用传输矩阵法计算得到的TM波正向和反向传播的透射率来研究其非互易特性。研究结果表明,增加等离子体回旋频率和入射角度能够改善非互易特性;而一味地增加等离子体频率和等离子体层厚度将会使得非互易传播特性变得恶化;增加周期常数不能明显地改善非互易传播特性,但是通过改变外加磁场的施加方式能够改善其非互易特性。

Under ideal conditions, the transmittances of forward and backward waves are calculated by the transfer matrix method under TM wave, which are applied to study the effects of the plasma cyclotron frequency, the plasma frequency, the thickness of plasma layer, the periodic constant and the incident angle on the nonreciprocal properties of one-dimensional magnetized plasma photonic crystals. The results demonstrate that the nonreciprocal properties can be improved by increasing the values of the plasma cyclotron frequency and incident angle. However, the nonreciprocal properties become worse as the value of the plasma frequency and the thickness of plasma layer are blindly increased. Increasing the periodic constant cannot help to improve the nonreciprocal properties, but those can be made better by changing the ways, which are used to introduce the external magnetic field.