Preprints
https://doi.org/10.5194/egusphere-2026-2631
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/egusphere-2026-2631
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
04 Aug 2026
| 04 Aug 2026
Status: this preprint is open for discussion and under review for Atmospheric Measurement Techniques (AMT).
Raman source using a hollow-core fiber for ozone monitoring in the lower troposphere
Abstract. The DIfferential Absorption microlidar for Boundary Layer Ozone (DIABLO) is designed for boundary-layer profiling. This instrument uses a diode-pumped, passively Q-switched Nd:YAG laser at 266 nm, coupled to a deuterium-filled hollow-core fiber (HCF) to generate the 289 nm Stokes wavelength via stimulated Raman scattering (SRS). The high Raman gain in the gas-filled HCF enables efficient UV conversion with significantly lower pump energy than required in traditional free-space Raman cells. At the output of the fiber, 1-ns pulses of 10 μJ at 266 nm and 7 μJ at 289 nm are obtained with a repetition rate of 1 kHz. First atmospheric measurements in central Paris provide ozone concentrations between 400 m and 1700 m. In contrast with existing UV DIAL ozone systems, which are typically bulky, complex, and operated in campaign-based research configurations, DIABLO targets a compact and low-energy architecture optimized for autonomous boundary-layer monitoring.
How to cite. Weinzaepflen, J., Ravetta, F., Victori, S., Ancellet, G., Cailteau-Fischbach, C., Mariage, V., Delahaye, F., Gérôme, F., and Benabid, F.: Raman source using a hollow-core fiber for ozone monitoring in the lower troposphere, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2026-2631, 2026.
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Joris Weinzaepflen
CORRESPONDING AUTHOR
Laboratoire Atmosphères et Observations Spatiales (LATMOS) / Institut Pierre-Simon Laplace (IPSL), Sorbonne Université, Université Versailles Saint-Quentin, CNRS, 4 place Jussieu 75252 Paris, France
CIMEL Electronique, 172 rue de Charonne - 75011 Paris, France
Université Paris-Saclay, Institut d’Optique Graduate School, CNRS, Laboratoire Charles Fabry, 2 Av. Augustin Fresnel 91127 Palaiseau, France
François Ravetta
Laboratoire Atmosphères et Observations Spatiales (LATMOS) / Institut Pierre-Simon Laplace (IPSL), Sorbonne Université, Université Versailles Saint-Quentin, CNRS, 4 place Jussieu 75252 Paris, France
Stéphane Victori
CIMEL Electronique, 172 rue de Charonne - 75011 Paris, France
Gérard Ancellet
Laboratoire Atmosphères et Observations Spatiales (LATMOS) / Institut Pierre-Simon Laplace (IPSL), Sorbonne Université, Université Versailles Saint-Quentin, CNRS, 4 place Jussieu 75252 Paris, France
Cristelle Cailteau-Fischbach
Laboratoire Atmosphères et Observations Spatiales (LATMOS) / Institut Pierre-Simon Laplace (IPSL), Sorbonne Université, Université Versailles Saint-Quentin, CNRS, 4 place Jussieu 75252 Paris, France
Sorbonne Université, CNRS, UAR OMA Terra, Observatoire des Sciences de l’Univers Ecce Terra, Paris Cedex 5, France
Vincent Mariage
Laboratoire Atmosphères et Observations Spatiales (LATMOS) / Institut Pierre-Simon Laplace (IPSL), Sorbonne Université, Université Versailles Saint-Quentin, CNRS, 4 place Jussieu 75252 Paris, France
Frédéric Delahaye
GLOphotonics, 123 Avenue Albert Thomas, Limoges 87060, France
Frédéric Gérôme
GLOphotonics, 123 Avenue Albert Thomas, Limoges 87060, France
GPPMM Group Xlim, 123 Avenue Albert Thomas Limoges, 87060, France
Fetah Benabid
GLOphotonics, 123 Avenue Albert Thomas, Limoges 87060, France
GPPMM Group Xlim, 123 Avenue Albert Thomas Limoges, 87060, France
Short summary
This study presents a compact ozone lidar designed to monitor ozone in the lower atmosphere over urban areas. The instrument uses a new optical fiber technology to generate ultraviolet laser light while reducing size and enabling more autonomous operation compared with existing instruments. First measurements in Paris successfully captured ozone variations up to nearly two kilometers altitude, demonstrating the potential of compact lidar systems for continuous urban air quality monitoring.
This study presents a compact ozone lidar designed to monitor ozone in the lower atmosphere over...
The manuscript presents a new application of an O3 DIAL system based on SRS shifting of a 266 nm laser eam at 289 nm based on a HCF fiber filled with D2.
The measurements presented suffer from several drawbacks.
1) No systematic approach is provided to calculate (estimate through simulations) the systematic errors on O3 DIAL measurements (from aerosols, SO2 and NO2 concentrations) in the PBL as stated by numerous papers in the 80's and 90's. To this end a new section is required (see my specific comments in the manuscript). 2) No statisitical and systematic errors are provided in the retrieved O3 vertical profiles (cf. Fig. 6) taking into account NO2 and aerosol data profiles obtained from ceilometer and even by CAMS model. The reference to ceilometer profile data is not scientifically supported as no data are provided. 3) The gluing technique for the analog and photoc counting signals has to be presented. 4) The CAMS model is used as a "reference" without its inherent uncertainties discussed. 5) Several parts of the manuscript need further analysis and discussion and support based on published papers, as explicitely explained in the annotated manuscrpt. 6) The Conclusions part needs inprovement based on comments provided in the atached annotated manuscript.