Study of the first stages of laser-induced contamination

Georges Gebrayel El Reaidy; Frank R. Wagner; Delphine Faye; Jean-Yves Natoli

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Study of the first stages of laser-induced contamination

机译：激光诱导污染的第一阶段研究

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A vacuum chamber was designed to study the risk of laser-induced contamination (LIC) on optical payloads integrated on spaceflight missions. In this context, tests were performed with a nanosecond pulsed laser at 355 nm on fused silica substrates under toluene exposure with multiple laser irradiation. Specific experimental procedures are described in order to obtain repeatable results. Finally, series of tests were performed to investigate the onset of the LIC deposition process and its evolution over time. A slight antireflective effect is consistently observed at the onset of the deposition process. We suggest that this is an indication that the LIC deposition process in our experimental conditions starts with a nucleation layer consisting of small dense islands of deposit.

机译：设计了一个真空室，以研究在航天飞行中集成的光学有效载荷上的激光诱发污染（LIC）的风险。在这种情况下，在甲苯暴露于多次激光照射下，用355 nm的纳秒脉冲激光在熔融石英基底上进行了测试。描述了特定的实验程序以获得可重复的结果。最后，进行了一系列测试以调查LIC沉积过程的开始及其随时间的演变。在沉积过程开始时始终观察到轻微的抗反射作用。我们认为这表明在我们的实验条件下LIC沉积过程始于由小而密集的沉积岛组成的成核层。

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来源
《Optical engineering》 |2018年第12期|121903.1-121903.8|共8页
作者
Georges Gebrayel El Reaidy; Frank R. Wagner; Delphine Faye; Jean-Yves Natoli;
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作者单位

Aix Marseille Universite, CNRS, Institut Fresnel, Ecole Centrale de Marseille, Marseille, France,Centre National d'Etudes Spatiales, Toulouse Cedex, France;

Aix Marseille Universite, CNRS, Institut Fresnel, Ecole Centrale de Marseille, Marseille, France;

Centre National d'Etudes Spatiales, Toulouse Cedex, France;

Aix Marseille Universite, CNRS, Institut Fresnel, Ecole Centrale de Marseille, Marseille, France;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
laser damage; laser-induced contamination; toluene; fused silica; fluorescence; nucleation;

机译：激光伤害;激光引起的污染;甲苯;熔融石英荧光成核;

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Study of the first stages of laser-induced contamination

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