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在太赫兹光谱范围内进行共振气体探测,使用双线相位移波导布拉格格格

Yang Cao^1,2, Kathirvel Nallappan², Guofu Xu²

¹Center for Advanced Laser Technology, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, China.

Sensors (Basel, Switzerland)

|October 28, 2023

概括

使用相位移波导布拉格格的新型太赫兹气体传感器为检测气体分析物提供了高灵敏度和分辨率. 这种紧,灵活的设备展示了实时气体监测应用的实际潜力.

科学领域:

光电学是指光电子产品.
特拉赫兹技术的技术.
化学传感器化学传感器

背景情况:

光学气体传感器需要低成本,紧,灵活,坚固的设计,以实现实际使用.
太赫兹 (THz) 频段为传感应用提供了独特的特性.

研究的目的:

开发一个基于波导的共振气体传感器,在太赫兹频段工作.
使用新型传感器设计,实现高灵敏度和高分辨率的气体检测.

主要方法:

使用了微封装的双线等离子波导和一个相位移波导布拉格格子 (WBG).
设计了一个模块化半密封结构,以实现高效的分析剂-辐射相互作用.
通过定制腔长和格子周期来优化光谱响应.

主要成果:

开发了一种THz气体传感器,在140 GHz周围运行,灵敏度为144 GHz/RIU.
实现了 7 × 10-5 RIU 的高分辨率.
通过光谱响应监测证明了对糖醇蒸汽的实时气体传感.

结论:

基于阶段转移格子的THz共振气体传感器显示了气体传感的巨大潜力.
这项技术为高精度监测气态分析物提供了新的机会.

关键词:

添加剂制造添加剂制造添加剂制造气体传感传感器是指气体传感器.一个相位移电网格.塑波导体的波导体太赫兹技术是太赫兹技术.

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