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Updated: Sep 11, 2025

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分散工程表面声波极子元表面用于可调和和高效的极化转换

Raghunandan B Iyer¹, Sang Hyun Park², Ramachandra Bangari¹

¹Department of Physics and Astronomy, The University of Iowa, Iowa City, Iowa 52245 United States.

|August 11, 2025

概括

我们开发了一种新的超表面,用于高效的中红外极化转换,克服了 lithography 的挑战. 这种可调的表面声波极子 (SPhP) 超表面为先进的传感和通信应用提供了成本效益高的光极化控制.

科学领域:

光学和光子学在光学和光子学.
材料科学材料科学材料科学
纳米技术纳米技术

背景情况:

超表面允许对光极化进行紧的控制,这对于成像,传感和通信至关重要.
由于依赖高分辨率光刻法,中红外 (IR) 中的高效和成本效益的极化转换受到阻碍.

研究的目的:

为了展示表面声波极子 (SPhP) 超表面的分散工程,以实现高效和可调的中红外极化转换.
为了克服传统石版的局限性,用于中红外线表面制造.

主要方法:

通过整合介电层来工程分散基于SiC的SPhP元表面.
控制的混合SPhP和SPhP类波导共振.
多样化的格子间距调整带宽.

主要成果:

在中红外线Reststrahlen频段中实现了高达61%的实验和82%的模拟偏振转换效率.
通过调整格子调度,证明带宽调度从146.82到52.2厘米-1 (15%到5%的设计频率).
设计避免了SiC蚀刻,提高了与难以蚀刻的材料的兼容性.

结论:

SPhP超表面为中IR中极化控制提供了具有成本效益和高效的解决方案.
可调节的带宽可以实现多种应用,包括宽带光谱和窄带热传感.
该平台可转移到其他SPhP材料中红外和太赫兹反射偏振器.

关键词:

散布工程散布工程是指分散的工程.在Metasurfaces上使用.中红外光子学中红外光子学极化转换变化表面声波极光子 (SPhP) 是一种极光子.可调节的光学设备

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