Pressure, temperature, and thickness dependence of transmittance in a 1D superconductor-semiconductor photonic crystal
Pressure, temperature, and thickness dependence of transmittance in a 1D superconductor-semiconductor photonic crystal
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DOI：
10.1063/1.5009708
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发表时间：
2018-01
影响因子：
3.2
通讯作者：
Alan Y. Herrera;J. M. Calero;N. Porras-Montenegro
中科院分区：
文献类型：
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作者：
Alan Y. Herrera;J. M. Calero;N. Porras-Montenegro
利用传递矩阵方法，研究了由半导体（GaAs）和高tc超导体（HgBa2Ca2Cu3O8+δ）层交替构成的一维光子晶体在温度、静水压力和层厚的影响下的透射率。采用基于双流体模型的频率相关色散公式来描述超导系统的光学响应。我们发现，增加超导体（半导体）层厚度会导致透射率截止频率的更高（更低）值的变化。此外，该截止频率随着温度的升高而移至较低的值。此外，我们发现光子带隙的宽度随外加压力的变化而变化。最臭名昭著的变化出现在17太赫兹区域附近，随着压力的增加出现了新的差距。我们希望这项工作能够为新型光学器件的设计提供新的思路。
Using the transfer matrix method, we study the transmittance of 1D photonic crystals made of alternated layers of a semiconductor (GaAs) and a high-Tc superconductor (HgBa2Ca2Cu3O8+δ) under the effects of temperature, applied hydrostatic pressure, and thickness of the layers. The frequency-dependent dispersion formula according to the two-fluid model was adopted to describe the optical response of the superconducting system. We found that increasing the superconductor (semiconductor) layer thickness results in a shift to higher (lower) values of the transmittance cutoff frequency. Additionally, this cutoff frequency is shifted to lower values with the temperature increase. Furthermore, we found that the width of the photonic bandgaps varies with the applied pressure. The most notorious variation is presented near the 17 THz region, where a new gap appears with the increase in pressure. We hope this work may be taken into consideration for the development of new perspectives in the design of new optical de...