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Fano resonances in a superconducting one-dimensional photonic crystal containing a semiconducting layer
Optik ( IF 3.1 ) Pub Date : 2020-03-20 , DOI: 10.1016/j.ijleo.2020.164545
Francis Segovia-Chaves , Herbert Vinck-Posada , Edgar A. Gómez

In this work, we consider the two-fluid model and the transfer-matrix method (TMM) for evaluating the reflectance spectrum in a one-dimensional photonic crystal that is composed by two alternating layers made of superconducting materials HgBa2Ca2Cu3O8+δ/BSCCO and a semiconducting layer (GaAs). Our model takes into account the critical temperature dependence on the hydrostatic pressure for the case of HgBa2Ca2Cu3O8+δ material, as well as a temperature and pressure dependence on the dielectric constants for case of GaAs semiconductor. We found that at low temperatures, the reflectance spectrum reveals multiple Fano resonances (FR) peaks which disappear as the temperature increases. Further, it is also demonstrated that an increment in the hydrostatic pressure induces a slightly shifts towards short wavelengths without reporting any noticeable changes in the reflectance spectrum. We also found that the number of FR peaks depends on the thickness of the superconducting layer HgBa2Ca2Cu3O8+δ and its maximum value of reflectance can be change by increasing the thickness of the BSCCO superconducting layer. We report the occurrence of the phenomenon of electromagnetically induced reflectance in the reflectance spectrum by an increment of the thickness of the GaAs semiconductor layer.



中文翻译:

包含半导体层的超导一维光子晶体中的Fano共振

在这项工作中,我们考虑了使用双流体模型和传递矩阵方法(TMM)来评估一维光子晶体的反射光谱,该一维光子晶体由超导材料HgBa制成的两个交替层组成223Ø8+δ/ BSCCO和半导体层(GaAs)。对于HgBa,我们的模型考虑了临界温度对静水压力的依赖性223Ø8+δ对于GaAs半导体,材料以及介电常数的温度和压力依赖性。我们发现在低温下,反射光谱显示出多个Fano共振(FR)峰,随着温度的升高而消失。此外,还证明静水压力的增加引起向短波长的轻微偏移,而没有报告反射光谱的任何明显变化。我们还发现FR峰的数量取决于超导层HgBa的厚度223Ø8+δ可以通过增加BSCCO超导层的厚度来改变其反射率的最大值。我们通过增加GaAs半导体层的厚度来报告在反射光谱中电磁感应反射现象的发生。

更新日期:2020-03-20
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