In this paper, a one-way multichannel and wide-angle absorber based on the one-dimensional superconductor photonic crystals (SPCs) in the terahertz regime is realized via splicing the classical quasi-period sequences and manipulating the ambient temperature properly, whose characteristics and mechanisms are theoretically investigated by the transfer matrix method. The preeminent absorbing features of the proposed SPCs are ascribed to the temperature and frequency-dependent refractive index of the superconductor components, whose imaginary part plays a role in giving rise to the high dissipation. Additionally, when the thickness of the whole structure is of the order of the incident electromagnetic wavelength, the one-way absorption and the reflection in the opposite direction can be perfectly obtained. The calculated results demonstrate that the relative bandwidths of the one-way effective absorption regions in our proposed SPCs can reach to 51.94%, 30.18%, and 19.12%, respectively, and the maximum angle where the wide-angle absorption region can sustain is up to 84° for TM wave by controlling the related parameters. Moreover, the impacts of the external factors such as temperature and incident angle and the interior elements including the thicknesses of diverse layers and the recursive numbers of the cascading sequences on the absorbing performance are also taken into account. To explicitly verify the reliability of our model, the impedance matching and the average refractive index are introduced for explaining the splendid multichannel absorption. As a whole, our research offers effective guidance for the theoretical excogitation of the multichannel and wide-angle absorber in the optical field.

本文通过拼接经典的准周期序列并适当地控制环境温度，实现了基于太赫兹一维超导体光子晶体（SPC）的单向多通道和广角吸收器。通过传递矩阵法对机理进行了理论研究。所提出的SPC的主要吸收特性归因于超导体部件的温度和频率相关的折射率，其虚部在引起高耗散中起作用。另外，当整个结构的厚度为入射电磁波长的量级时，可以完美地获得单向吸收和在相反方向上的反射。计算结果表明，在我们提出的SPC中，单向有效吸收区的相对带宽可以分别达到51.94％，30.18％和19.12％，并且广角吸收区可以维持的最大角度增加通过控制相关参数可将TM波设置为84°。此外，还考虑了诸如温度和入射角之类的外部因素以及包括各层厚度和级联序列的递归数的内部元素对吸收性能的影响。为了明确验证我们模型的可靠性，引入阻抗匹配和平均折射率来解释出色的多通道吸收。整体而言