Optical design and characterization of the MOMA laser head flight model for the ExoMars 2020 mission

Büttner, A.; Ernst, M.; Hunnekuhl, M.; Kalms, Roland; Willemsen, L.; Weßels, P.; Kracht, Dietmar; Neumann, Jörg

doi:10.1117/12.2536116

Cited by 5 publications

(5 citation statements)

References 6 publications

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“…The laser generates >450 μJ/pulse at 266 nm [21], more than three times the maximum energy of the laser for the state-of-the-art Mars Organic Molecule Analyzer (MOMA) instrument onboard the ExoMars rover [9]. Fine attenuation control down to 1% of the maximum output energy is achieved by controlling the polarization of incident 532 nm light prior to conversion to 266 nm in the fourth harmonic; for comparison, the MOMA laser output energy can only be reduced to 10% of the maximum value by thermal detuning of the fourth harmonic crystal [22]. A longstanding issue for LDMS techniques has been the deduction of quantitative information, particularly relative and absolute abundances of elemental and molecular species.…”

Section: Main Text (Upper Limit 3500 Words Excl Abstract Methods Refe...mentioning

confidence: 99%

Laser desorption mass spectrometry with an Orbitrap analyser for in situ astrobiology

et al. 2023

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Section: Main Text (Upper Limit 3500 Words Excl Abstract Methods Refe...mentioning

confidence: 99%

Laser desorption mass spectrometry with an Orbitrap analyser for in situ astrobiology

et al. 2023

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“…All data and experience gained from previous LH models led to the final FM design [22,23]. The FM was realized, extensively characterized, qualified according to a protoflight approach (with respect to environmental test loads) and finally delivered to GSFC in mid-2017.…”

Section: Model Philosophy and Historymentioning

confidence: 99%

Space-qualified, compact and lightweight pulsed DPSS UV laser for the MOMA instrument of the ExoMars mission

et al. 2022

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A space-qualified pulsed UV laser has been developed as an irradiation source for the Mars Organic Molecule Analyser (MOMA) instrument aboard the “Rosalind Franklin” rover of the ExoMars mission (ESA/Roscosmos). MOMA will search for signatures of extinct and/or extant life on Mars. Its advanced analytical capabilities arise from the combination of a pyrolysis gas chromatograph and an ion trap-based mass spectrometer. With the addition of a compact UV laser system enabling laser desorption/ionization mass spectrometry, MOMA can detect a wide variety of both volatile and non-volatile, organic and inorganic molecules within Martian soil samples of interest. The design of the MOMA Laser Head is based on a longitudinally diode-pumped, passively Q-switched Nd:Cr:YAG oscillator generating millijoule pulses with nanosecond pulse durations at a wavelength of 1064 nm. A subsequent two-stage frequency quadrupling converts the fundamental infrared emission of the oscillator into the deep UV at 266 nm. The Laser Head emits UV pulses with a duration of about 1.5 ns and an energy tunable between 12.5 and 125 µJ for optimum adaptation to varying ionization thresholds of different molecular species. The complex but highly compact opto-mechanical design, enclosed in a hermetically sealed housing, is realized within an envelope of 200 × 56 × 45 mm3 with a total mass of less than 220 g. In this paper, we present a comprehensive summary of our development efforts towards the delivery of the LH Flight Model, which has been integrated to the MOMA instrument and finally incorporated into the ExoMars rover.

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“…published a detailed description of the LIMS subsystem of the instrument. A compact solid-state frequency quadrupled Nd:YAG laser emitting at λ = 266 nm wavelength and pumped by a 70 W pump diode is used as a LI source (Büttner et al, 2019;Weßels et al, 2019). The radiation is generated in ∼1 ns pulses with laser pulse energy adjustable in the range of 13-130 mJ, producing laser beam fluences on the order of 0.01−0.1 J•cm −2 and irradiances of 10−100 MW•cm −2 .…”

Section: Compact Linear Ion Trap Mass Spectrometer With LImentioning

confidence: 99%

Laser Ionization Mass Spectrometry at 55: Quo Vadis?

Azov

Mueller

Makarov

2020

Mass Spectrometry Reviews

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Laser ionization mass spectrometry (LIMS) was one of the first practical methods developed for in situ analysis of the surfaces of solid samples. This review will encompass several aspects related to this analytical method. First, we will discuss the process of laser ionization, the influence of the laser type on its performance, and imaging capabilities of this method. In the second chapter, we will follow the historic development of LIMS instrumentation. After a brief overview of the first-generation instruments developed in 1960-1990 years, we will discuss in detail more recent designs, which appeared during the last 2-3 decades. In the last part of our review, we will cover the recent applications of LIMS for surface analysis. These applications include various types of analyses of solid inorganic, organic, and heterogeneous samples, often in combination with depth profiling and imaging capability.

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Optical design and characterization of the MOMA laser head flight model for the ExoMars 2020 mission

Cited by 5 publications

References 6 publications

Laser desorption mass spectrometry with an Orbitrap analyser for in situ astrobiology

Laser desorption mass spectrometry with an Orbitrap analyser for in situ astrobiology

Space-qualified, compact and lightweight pulsed DPSS UV laser for the MOMA instrument of the ExoMars mission

Laser Ionization Mass Spectrometry at 55: Quo Vadis?

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