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Miniaturized ring-down spectrometer for CubeSat-based planetary science.

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    This summary is machine-generated.

    A compact, miniaturized spectrometer was developed for planetary science missions. This robust instrument demonstrates high sensitivity for water vapor and oxygen isotope measurements, paving the way for CubeSat deployments.

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    Area of Science:

    • Planetary Science
    • Spectroscopy
    • Astrophysics

    Background:

    • Miniaturized spectrometers are crucial for in situ analysis in space missions.
    • CubeSat platforms require compact, low-power, and low-mass instruments.
    • Cavity Ring-Down Spectroscopy (CRDS) offers high sensitivity for trace gas detection.

    Purpose of the Study:

    • To develop a robust, miniaturized CRDS for CubeSat deployment.
    • To demonstrate its capability for in situ planetary measurements.
    • To ensure flexibility for various planetary science targets across the near- and mid-infrared spectrum.

    Main Methods:

    • Development of a miniaturized CRDS laboratory demonstration model.
    • Operation at 1.39 μm for water vapor isotope measurements.
    • Demonstration of scanning performance using oxygen isotope measurements.
    • Design utilizing components with functional equivalents across the 1-5 μm range.

    Main Results:

    • Achieved a noise-equivalent absorption coefficient of 3.7×10-9 cm-1 Hz-1/2 at 1.39 μm for water vapor.
    • Successfully demonstrated scanning performance for oxygen isotope analysis.
    • Preliminary results for methane measurements at 3.27 μm were presented.

    Conclusions:

    • The developed spectrometer is compatible with CubeSat spacecraft buses.
    • Its small probed gas volume (less than 2.5 cc) meets mass, volume, and power constraints.
    • The instrument's design offers flexibility for diverse planetary science applications.