Time-domain terahertz gas spectroscopy using hollow-optical-fiber gas cell
作者: Takashi KatagiriTakahiro SuzukiYuji Matsuura
作者单位: 1Tohoku University
刊名: Optical Engineering, 2018, Vol.57 (5), pp.054104-054104
来源数据库: SPIE-the International Society for Optical Engineering
DOI: 10.1117/1.OE.57.5.054104
关键词: Terahertz time-domain spectroscopyHollow optical fibersGas analysis
原始语种摘要: For gas analysis systems based on terahertz time-domain spectroscopy (THz-TDS), relatively complex systems have been proposed to enhance the sensitivity to measure small amounts of gas. This paper proposes a simple system comprising a hollow optical fiber with an inner dielectric layer as a low-volume and long-path gas cell THz-TDS-based gas analysis system. The inner dielectric layer of the fiber not only reduces the transmission loss for THz waves, but also protects the metal layer of the fiber from reactive gases. The proposed dielectric-loaded fiber is fabricated by depositing a metal thin film on a polymer film tube. In a gas analysis experiment conducted using the fiber with a THz-TDS system, separating the absorption peaks of NH3 gas and water vapor initially proved to...
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关键词翻译
关键词翻译
  • optical 光学的
  • fiber 纤维
  • spectroscopy 分光学
  • dielectric 电介质
  • domain 领域
  • hollow 浅凹地
  • fabricated 制造
  • layer 
  • absorption 吸收
  • analysis 分析