Raman laser spectrometer optical head: qualification model assembly and integration verification

G. Ramos; M. Sanz-Palomino; A. G. Moral; C. P. Canora; T. Belenguer; R. Canchal; J. A. R. Prieto; A. Santiago; C. Gordillo; D. Escribano; G. Lopez-Reyes; F. Rull

doi:10.1117/12.2277003

22 August 2017 Raman laser spectrometer optical head: qualification model assembly and integration verification

G. Ramos, M. Sanz-Palomino, A. G. Moral, C. P. Canora, T. Belenguer, R. Canchal, J. A. R. Prieto, A. Santiago, C. Gordillo, D. Escribano, G. Lopez-Reyes, F. Rull

Author Affiliations +

Proceedings Volume 10377, Optical System Alignment, Tolerancing, and Verification XI; 103770O (2017) https://doi.org/10.1117/12.2277003
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

Raman Laser Spectrometer (RLS) is the Pasteur Payload instrument of the ExoMars mission, within the ESA’s Aurora Exploration Programme, that will perform for the first time in an out planetary mission Raman spectroscopy. RLS is composed by SPU (Spectrometer Unit), iOH (Internal Optical Head), and ICEU (Instrument Control and Excitation Unit). iOH focuses the excitation laser on the samples (excitation path), and collects the Raman emission from the sample (collection path, composed on collimation system and filtering system). Its original design presented a high laser trace reaching to the detector, and although a certain level of laser trace was required for calibration purposes, the high level degrades the Signal to Noise Ratio confounding some Raman peaks. So, after the bread board campaign, some light design modifications were implemented in order to fix the desired amount of laser trace, and after the fabrication and the commitment of the commercial elements, the assembly and integration verification process was carried out. A brief description of the iOH design update for the engineering and qualification model (iOH EQM) as well as the assembly process are briefly described in this papers. In addition, the integration verification and the first functional tests, carried out with the RLS calibration target (CT), results are reported on.

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G. Ramos, M. Sanz-Palomino, A. G. Moral, C. P. Canora, T. Belenguer, R. Canchal, J. A. R. Prieto, A. Santiago, C. Gordillo, D. Escribano, G. Lopez-Reyes, and F. Rull "Raman laser spectrometer optical head: qualification model assembly and integration verification", Proc. SPIE 10377, Optical System Alignment, Tolerancing, and Verification XI, 103770O (22 August 2017); https://doi.org/10.1117/12.2277003

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KEYWORDS

Raman spectroscopy

Spectroscopy

Calibration

Head

Laser optics

Laser spectroscopy

Auroras

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