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The Sentinel-5/UVNS instrument is a spectrometer developed within the Copernicus program for monitoring trace gas concentrations and aerosols in Earth’s atmosphere with unprecedented accuracy and resolution. The performance of the satellite spectrometers in orbit relies upon accurate characterisation and radiometric calibration of the optical ground support equipment (OGSE). M Squared Lasers has developed a series of advanced tuneable, fully-automated, remotely controlled, narrow-linewidth laser systems, providing rapid scanning across the extensive wavelength operating range from 260-2700 nm, with a number of unique features that ensure stringent source requirements are met throughout the mission lifetime. To the best of our knowledge, these laser systems are the first of their kind, demonstrating a significant leap in laser technology with regards to remote controlled automated operation, gapless wavelength coverage from UV to SWIR, functionality and performance. This paper will detail each of the S5 laser sources, describe the engineering achievements in their development.
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