Characterization Procedure of the Flight Laser Modules for the ExoMars Raman Laser Spectrometer Topics: Fiber Lasers and Applications; Laser Spectroscopy and Microscopy; Optics in Astronomy and Astrophysics In Proceedings of the 8th International Conference on Photonics, Optics and Laser Technology PHOTOPTICS - Volume 1, 107-113, 2020 , Valletta, Malta