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Proceedings Paper • Open Access

Optical properties behavior of three optical filters and a mirror used in the internal optical head of a Raman laser spectrometer after exposed to proton radiation
Author(s): V. Guembe; C. G. Alvarado; M. Fernández-Rodriguez; P. Gallego; T. Belenguer; E. Díaz

Paper Abstract

The Raman Laser Spectrometer is one of the ExoMars Pasteur Rover’s payload instruments that is devoted to the analytical analysis of the geochemistry content and elemental composition of the observed minerals provided by the Rover through Raman spectroscopy technique. One subsystem of the RLS instrument is the Internal Optical Head unit (IOH), which is responsible for focusing the light coming from the laser onto the mineral under analysis and for collecting the Raman signal emitted by the excited mineral. The IOH is composed by 4 commercial elements for Raman spectroscopy application; 2 optical filters provided by Iridian Spectral Technologies Company and 1 optical filter and 1 mirror provided by Semrock Company. They have been exposed to proton radiation in order to analyze their optical behaviour due to this hostile space condition. The proton irradiation test was performed following the protocol of LINES lab (INTA). The optical properties have been studied through transmittance, reflectance and optical density measurements, the final results and its influence on optical performances are presented.

Paper Details

Date Published: 17 November 2017
PDF: 9 pages
Proc. SPIE 10563, International Conference on Space Optics — ICSO 2014, 105634V (17 November 2017); doi: 10.1117/12.2304069
Show Author Affiliations
V. Guembe, INTA (Spain)
C. G. Alvarado, INTA (Spain)
M. Fernández-Rodriguez, INTA (Spain)
P. Gallego, INTA (Spain)
T. Belenguer, INTA (Spain)
E. Díaz, INTA (Spain)

Published in SPIE Proceedings Vol. 10563:
International Conference on Space Optics — ICSO 2014
Zoran Sodnik; Bruno Cugny; Nikos Karafolas, Editor(s)

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