27 September 2016 Laser-induced contamination of space borne laser systems: impact of organic contamination and mitigation by oxygen
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Abstract
Laser-induced contamination (LIC) is still a major risk for space based laser systems. In this paper the mitigation of LIC by oxygen is investigated. Tests were performed with a pulsed laser at 355 nm. The partial pressure of the contamination material was in the range of 10-5 -10-4 mbar. The mitigation effect showed a threshold behavior concerning the ratio between contamination and oxygen pressure. Also a cleaning effect was successfully demonstrated: previously created depositions were completely removed by irradiation at several tens Pa oxygen pressure without any remaining degradation of the optical surface.
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M. Hippler, M. Hippler, P. Wagner, P. Wagner, H. Schroeder, H. Schroeder, W. Riede, W. Riede, } "Laser-induced contamination of space borne laser systems: impact of organic contamination and mitigation by oxygen", Proc. SPIE 9952, Systems Contamination: Prediction, Control, and Performance 2016, 99520N (27 September 2016); doi: 10.1117/12.2236897; https://doi.org/10.1117/12.2236897
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