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Yu et al., 2023 - Google Patents

Simultaneous detection of CO2/CH4 based on off-axis integrated cavity output spectroscopy and time-division-multiplexing-based wavelength modulation …

Yu et al., 2023

Document ID
16405872664802617210
Author
Yu R
Xia H
Pang T
Wu B
Li Z
Sun P
Guo Q
Zhang Z
Cai Y
Publication year
Publication venue
Optics Communications

External Links

Snippet

A highly sensitive dual gases detection system was established for detecting the concentrations of carbon dioxide (CO 2) and methane (CH 4) simultaneously based on off- axis integrated cavity output spectroscopy (OA-ICOS) technology. Two Distributed Feedback …
Continue reading at www.sciencedirect.com (other versions)

Classifications

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    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
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    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/39Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
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    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
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    • G01N21/27Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection circuits for computing concentration
    • G01N21/274Calibration, base line adjustment, drift correction
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    • G01N21/62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • GPHYSICS
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    • G01N21/62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/71Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
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    • G01MEASURING; TESTING
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    • GPHYSICS
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    • GPHYSICS
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    • G01J3/00Spectrometry; Spectrophotometry; Monochromators; Measuring colour
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    • G01J3/0205Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
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    • GPHYSICS
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    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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    • G01J3/02Details
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