Diode laser spectroscopy instrument design for in situ study of atmosphere near the Martian surface

An application of tunable diode laser absorption spectroscopy in combination with integrated cavity output spectroscopy was proposed for Martian atmosphere study as a Martian multichannel diode laser spectrometer, or M-DLS experiment. M-DLS instrument has been further modified into a compact and lightweight device for continuous in situ study of chemical and isotopic composition variations of atmosphere near the Martian surface at the ExoMars-2020 mission stationery Landing Platform.