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用于可靠,大面积,宽带THz波调节器的电动激活W-Doped VO2片

Eduard-Nicolae Sirjita^1,2, Alexandre Boulle², Jean-Christophe Orlianges¹

¹XLIM Research Institute, CNRS/University of Limoges, Limoges 87000, France.

ACS applied materials & interfaces

|April 9, 2025

概括

配的二氧化 (VO) 薄膜使得高效的太赫兹 (THz) 调节器成为可能. 这些设备在宽频带上提供高调制深度,这对于未来的THz通信至关重要.

科学领域:

材料科学材料科学材料科学
电磁学电磁学电磁学电磁学
凝聚物质物理学凝聚物质物理学

背景情况:

太赫兹 (THz) 振幅调制器和开关是未来THz通信系统的重要组成部分.
当前的THz调制器难以在宽频带中实现高调制深度,并且需要电气控制来实现实际应用.
现有的设备往往无法满足对可靠,大面积和宽带THz调制的需求.

研究的目的:

调查W-doped VO₂膜在开发高效THz波调节器方面的潜力.
为了证明电气控制的绝缘器到金属过渡 (IMT) 在VO₂的THz调制.
为了实现可靠,大面积和宽带THz调制,具有高调制深度.

主要方法:

用于生长W-doped VO₂ 膜的直流磁铁龙喷雾.
在现场/操作中使用X射线衍射和拉曼光谱来描述结构性和电子性质.
电阻测量和时间域THz光谱测量以评估调制性能.

主要成果:

W 兴奋剂可以调整 IMT 温度,并控制 VO₂ 中电激活过渡的拓.
由W兴奋剂引起的结构扭曲是IMT空间分布观察到的变化的原因.
在大面积 (3.8 × 10 毫米) 上展示了基于VO2的设备与电动触发的IMT,实现96%的调制深度从0.2-2 THz.

结论:

W-doped VO₂ 薄膜对于创建可靠的大面积宽带THz调制器非常有效.
在W-doped VO₂中对IMT的电控制是高级THz调制的可行策略.
这些发现为有效的THz通信系统的实际实施铺平了道路.

关键词:

这就是THz调制器.THz 开关的开关是从绝缘体到金属的转变的兴奋剂的兴奋剂二氧化瓦纳二氧化是什么

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