First results and ongoing improvement of SCALE airborne experiment

Le résumé fourni par la source

This paper concerns Frequency Comb LIDAR Airborne experiment developed by CNES. This airborne demonstrator is named SCALE standing for Short Comb Atmospheric LIDAR Experiment. To be more specific, this paper concerns an all-fibered 7-tooth frequency comb LIDAR designed for CO2 column retrieval. This airborne demonstration uses high TRL components from fiber telecom industry. As for Dual Comb Spectroscopy, heterodyne detection is used to convert optical frequency combs beating towards radiofrequency domain. A first version of this experiment was embedded within an ATR-42 from SAFIRE in September 2023. Results from this 2023 airborne campaign will be quickly presented in this paper. We will then focus on lessons learned from this campaign and how that analysis lead us to instrument improvements. Airborne instrument evolutions will finally be detailed. We will present improvements assessments through laboratory demonstrations, carried out before 2024 airborne campaign scheduled in October. Evolutions concerns several parts of the instrument, from master laser to detection chain, as well as amplification chain architecture.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.