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Glass Micromachining Using the VUV F_2 Laser

机译:使用VUV F_2激光进行玻璃微加工

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摘要

Theoretical and experimental studies of the surface quality in 157nm F_2 laser-ablated glasses are reported. Limitations set by statistical fluctuations in the multi-mode beam and by stationary beam non-uniformity are explored together with materials issues such as laser- induced surface cracking. Experimental work on ablating polymethylmethacrylate (PMMA), used as a low threshold medium for recording of the VUV beam, and soda lime glass are described. Use is made of the probe beam deflection technique to determine ablation thresholds, and a variety of methods adopted for characterising and assessing the quality of ablated surfaces e.g. scanning-electron microscopy, mechanical and optical interference profiling and atomic force microscopy. Preliminary roughness measurements are compared with theoretical expectations and the implication for glass micromachining with the F_2 laser discussed.
机译:报道了157nm F_2激光烧蚀玻璃表面质量的理论和实验研究。探讨了由多模光束的统计波动和固定光束的不均匀性所设置的限制,以及诸如激光诱导的表面裂纹之类的材料问题。描述了烧蚀聚甲基丙烯酸甲酯(PMMA)的实验工作,该玻璃用作记录VUV光束的低阈值介质,以及钠钙玻璃。利用探测束偏转技术来确定烧蚀阈值,并采用各种方法来表征和评估烧蚀表面的质量,例如表面粗糙度。扫描电子显微镜,机械和光学干涉图以及原子力显微镜。将初步的粗糙度测量结果与理论预期值进行了比较,并讨论了用F_2激光进行玻璃微加工的意义。

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