| Issue |
EPJ Web Conf.
Volume 362, 2026
31st International Laser Radar Conference (ILRC 31) Held Together with the 22nd Coherent Laser Radar Conference (CLRC 22)
|
|
|---|---|---|
| Article Number | 14001 | |
| Number of page(s) | 4 | |
| Section | CLRC Coherent DIAL, DISC and Aerosol Lidar | |
| DOI | https://doi.org/10.1051/epjconf/202636214001 | |
| Published online | 09 April 2026 | |
https://doi.org/10.1051/epjconf/202636214001
Hybrid fiber/bulk DIAL-Doppler lidar for CO2 and wind measurement at 2.05 µm
(a) DOTA, ONERA, Université Paris Saclay, F-91123 Palaiseau, France
(b) DOTA, ONERA, Université de Toulouse, F-31055 Toulouse, France
(c) Laboratoire de Météorologie Dynamique (LMD), Centre de Recherche National Scientifique (CNRS), Ecole Polytechnique, FR-91128 Palaiseau Cedex, France Lead Author e-mail address: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 9 April 2026
Abstract
We report on the development of a DIfferential Absorption Lidar (DIAL) with coherent detection using a hybrid fiber/bulk laser for CO2 and wind measurement at 2.05 µm. Peak power is limited at 0.6 kW by Stimulated Brillouin Scattering in the fibered part. A Ho:YLF bulk amplifier allows to overcome this limitation, providing 12-19 dB additional gain depending on the pulse repetition frequency. The hybrid fiber/bulk architecture delivers laser pulses of 1.5 mJ, 200 ns at 20 kHz (30 W average power). The architecture provides easy tunability on pulse repetition frequency, duration, and wavelength emission around the absorption line. This flexibility allows for the adjustment of the compromise between measurement range and precision. Firsts measurements of CO2 Volume Mixing Ratio (VMR) and wind speed are currently being carried out. Then, the system will be used to measure CO2 emissions from thermal plants and atmospheric CO2 fluxes using eddy covariance calculations.
© The Authors, published by EDP Sciences, 2026
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