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一个极化依赖的完美吸收器,具有高的Q因子,通过Tamm声极立子在高波材料中启用

Didi Song¹, Biyuan Wu², Yufang Liu¹

¹Henan Key Laboratory of Infrared Materials & Spectrum Measures and Applications, School of Physics, Henan Normal University, Xinxiang 453007, P. R. China. yukun@htu.edu.cn.

Physical chemistry chemical physics : PCCP

|September 19, 2023

概括

我们使用独特的α-MoO3结构展示了近单位的红外吸收,实现了超窄的带宽和对先进设备的偏振依赖效应.

科学领域:

材料科学材料科学材料科学
光学是什么?光学是什么?光学是什么?
凝聚物质物理学凝聚物质物理学

背景情况:

α相三氧化物 (α-MoO3) 是一种具有高异性质的双轴过度波材料.
无极性使得α-MoO3适合用于偏振依赖光学装置.
声子极子是电子和光学声子的集体激发.

研究的目的:

为了证明在中红外波段的完美吸收,使用Tamm配置与α-MoO3基质.
研究塔姆声极子在实现窄带宽吸收中的作用.
探索设计设备的可调性和偏振依赖性质.

主要方法:

一个Tamm配置的制造,包括一个1D光子晶体在一个α-MoO3基板上,有一个介电介层.
在中红外区域的光学吸收光谱的表征.
通过改变介电介层间层厚度来调整吸收共振.
使用石墨烯单层对电子可调性进行研究.

主要成果:

在由Tamm声极子控制的中红外波段实现了近单位的吸收.
由于极子共振,观察到具有高质量因子 (高达181) 的超窄吸收峰值.
通过调整间层厚度,在更广泛的波长范围内证明了近单元吸收共振的可调性.
由于α-MoO3.3的内平面异构性,表现出了卓越的偏振依赖吸收性能.
通过添加石墨烯单层来确认设备的电子可调性.

结论:

设计的Tamm结构与α-MoO3基板有效地实现了完美的吸收在中红外线.
该设备具有狭窄的带宽,可调节的共振和强大的偏振依赖性,使其适合各种应用.
潜在的应用包括红外吸收器,偏振探测器,传感器和能量收集设备.

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