• Title/Summary/Keyword: 광학(optics)

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Optics for Satellite Remote Sensing Systems

  • Opt
    • Proceedings of the Optical Society of Korea Conference
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    • 1995.06a
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    • pp.53-58
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    • 1995

  • Examples of advanced digital electro-optic imaging systems for the satellite remote sensing applications are introduced including multispectral focal plane assembly for newly proposed 1-m spatial resolution capability.

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Quantitative Measurement of Ethane Using Mid-infrared Cavity Ring-down Spectroscopy

  • Yonghee Kim;Byung Jae Chun;Lim Lee;Kwang-Hoon Ko;Seung-Kyu Park;Taek-Soo Kim;Hyunmin Park
    • Current Optics and Photonics
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    • v.7 no.4
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    • pp.457-462
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    • 2023

  • Quantitative measurement of trace ethane is important in environmental science and biomedical applications. For these applications, we typically require a few tens of part-per-trillion level measurement sensitivity. To measure trace-level ethane, we constructed a cavity ring-down spectroscopy setup in the 3.37 ㎛ mid-infrared wavelength range, which is applicable to multi-species chemical analysis. We demonstrated that the detection limit of ethane is approximately 300 parts per trillion, and the measured concentration is in agreement with the amounts of the injected sample. We expect that these results can be applied to the chemical analysis of ethane and applications such as breath test equipment.

  • https://doi.org/10.3807/COPP.2023.7.4.457 인용 PDF