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EP: Fachverband Extraterrestrische Physik
EP 7: Poster Session
EP 7.2: Poster
Wednesday, March 18, 2026, 16:15–18:45, Redoutensaal
Time-Domain Spectroscopy Techniques for the Identification of Minerals and Gases in Space Research — •Emma Kinne1,2, Yookyung Ha1,2, Sergey G. Pavlov2, Jonas Woeste1,2, Dominic Azih1,2, Bruno Broer1,2, Nikola Stojanovic2, and Michael Gensch1,2 — 1Technische Universität Berlin, Berlin, Germany — 2DLR Institute of Space Research, Berlin, Germany
On planetary missions, the identification of gases and the characterization of solids by their spectroscopic fingerprint are typically performed by infrared and/or Raman spectrometers. The advent of space-qualified femtosecond lasers enables to perform the same task by a new class of time-domain techniques which have the potential to be much more robust, compact and sensitive. Methods such as Time-Domain Raman Spectroscopy (TDRS) and Rotational Coherent Raman Scattering (RCRS) retrieve Raman-active fingerprints of solids and molecules, respectively. Recently, we reported TDRS to be a viable alternative to continuous wave Raman spectroscopy in identifying minerals [1]. Here, we demonstrate that the same experimental setup, that is used for TDRS, can detect molecular species via RCRS. We report measured rotational revival signatures from N2 and O2 at room temperature and atmospheric pressure. Simulations using the LIMAO software further show that this setup could detect a wide range of molecular species under extraterrestrial conditions.
[1] Y. Ha, et. al., Time-Domain Raman Spectroscopy: An Emerging Technique in Space Exploration? J. Raman Spectrosc. 56 (2025)
Keywords: Time Domain Spectroscopy; Raman; Minerals; Gases; Rotational Spectroscopy