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Chen et al., 2020 - Google Patents

All-optical photoacoustic multigas analyzer using digital fiber-optic acoustic detector

Chen et al., 2020

Document ID
15770973222705333569
Author
Chen K
Zhang B
Guo M
Deng H
Yang B
Gong Z
Peng W
Yu Q
Publication year
Publication venue
IEEE Transactions on Instrumentation and Measurement

External Links

Snippet

We present an all-optical photoacoustic (PA) multigas analyzer by using a digital fiber-optic acoustic detector, which consists of a spectrum demodulation based fiber Fabry-Perot (FP) pressure sensor and a digital virtual lock-in amplifier. The concentration of multigas is …
Continue reading at ieeexplore.ieee.org (other versions)

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    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
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    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
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    • G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
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    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
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    • G01J3/024—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using means for illuminating a slit efficiently (e.g. entrance slit of a spectrometer or entrance face of fiber)

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