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Sven Augustin

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Proceedings Article | 11 June 2021 Open Access

Characterization of liquid crystal on silicon-SLMs for in-situ laser beam steering to enable RAMAN imaging

Sebastian Ritter, Sven Augustin, Anko Börner, David Krutz, Ute Böttger

Proceedings Volume 11852, 118526E (2021) https://doi.org/10.1117/12.2600289

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In the future, the use of lunar regolith for resource extraction and manufacturing of construction materials will play a significant role in lunar exploration projects. Raman spectroscopy can contribute to the quality control of materials made of moon regolith. To improve system reliability in Raman point mapping it is proposed to use dynamic light shaping to reduce the risk of thermal and mechanical damage. An approach to characterize a Liquid Crystal on Silicon (LCoS) Spatial Light Modulator (SLM) is shown. For this purpose, influence parameters are identified and evaluated with the help of a laboratory setup and a complementary simulation in order to evaluate the possibilities and limitations of Raman raster point mapping in respect to the deflection and spot shaping.

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