Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 19, issue 10
Articles | Volume 19, issue 10
https://doi.org/10.5194/amt-19-3397-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-19-3397-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 10
Research article
 | 
26 May 2026
Research article |  | 26 May 2026

A real time reference system for wavelength locking in laser induced fluorescence with gas expansion (LIF-FAGE) measurement of atmospheric hydroxyl (OH) radicals

Shiyi Chen, Cuihong Zhang, Yihui Wang, Qi Zang, Xuefei Ma, Zhaofeng Tan, Limin Zeng, Yuanhang Zhang, and Keding Lu

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Short summary
We have developed a real-time reference system that can actively lock the wavelength of the detection laser, like a "navigation" system, overcoming the challenge of data inaccuracies caused by laser wavelength drift in previous measurements. This technological advancement will enable scientists to monitor the OH, a key component in the atmosphere, more reliably and over longer periods.
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