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Detection of isotopic 12CH4 and 13CH4 using cavity ring-down spectroscopy coupled with an external-cavity quantum cascade laser

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We developed a mid-infrared continuous-wave cavity ring-down spectroscopy technique coupled with an external-cavity mode-hop-free quantum cascade laser working at 7.5 µm. We, subsequently, tested the system by measuring 12CH4 and 13CH4 isotopes of methane (CH4).

© 2018 The Author(s)

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