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Femtosecond laser interaction with protection materials

机译:飞秒激光与保护材料的相互作用

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Textile, aluminium and polyethylene used as components in laser protection curtains were investigated with respect to their ablation behaviour. Employing 33-fs pulses (800 nm wavelength, 1 kHz repetition rate), ex situ geometrical measurements of the ablation cavities and in situ acoustic investigations with a microphone were performed to determine the ablation thresholds in the single- and multi-pulse cases. The acoustical method proved advantageous for complex surface morphologies and/or single laser pulse interactions. Incubation phenomena can be observed for all the materials studied. Technically relevant multi-pulse ablation thresholds are presented and are compared with the single-pulse (1-on-1) irradiation.
机译:就其消融性能,对用作激光防护帘幕组件的纺织品,铝和聚乙烯进行了研究。利用33 fs的脉冲(800 nm波长,重复频率1 kHz),对消融腔进行异位几何测量,并通过麦克风进行原位声学研究,以确定单脉冲和多脉冲情况下的消融阈值。声学方法被证明对于复杂的表面形态和/或单个激光脉冲相互作用是有利的。可以观察到所有研究材料的孵化现象。提出了技术上相关的多脉冲消融阈值,并将其与单脉冲(一对一)照射进行了比较。

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