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熔石英光学元件的损伤前驱及其抑制技术 被引量:5

Laser damage precursors in fused silica and mitigation process
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摘要 基于抛光所引起的熔石英元件表面、亚表面所存在的损伤前驱体分布,研究了不同种类的损伤前驱体所引起的损伤形貌。然后根据不同种类的损伤前驱体分别采用表面活性剂、强氧化性酸、氢氟酸的水溶液对不同的损伤前驱体进行处理。研究结果显示:经过前期预先清洗以后,吸收性杂质所导致的雾状损伤得以消除,亚表面分布的裂纹得以很好地平滑钝化,极大地提升了熔石英光学元件的抗损伤性能,损伤阈值从4.8J/cm2提高到11.0J/cm2,最大提升幅度达到原来的2.3倍。 The laser damage precursors in fused silica were systematically isolated and identified. The paper shows laser damage micrographs from different precursors which are formed during fabrication. Conventionally polished and subsequently scratched fused silica plates were treated by submerging in various HF-based etchants (HF, or NH4F and HF at various ratios and concentrations) under different process conditions. With the optimized etch process, laser damage resistance increased dra- matically the average threshold fluence for damage initiation for fused silica increased from 4.8 to 11.0 J/cm^2.
出处 《强激光与粒子束》 EI CAS CSCD 北大核心 2013年第12期3220-3224,共5页 High Power Laser and Particle Beams
基金 国家自然科学基金项目(60908023 61078075) 中国工程物理研究院发展基金项目(2010B0401055)
关键词 熔石英 损伤前驱体 氢氟酸 损伤性能 fused silica laser damage precursors HF damage properties
作者简介 叶鑫(1983-),男,助理研究员,主要从事高功率光学材料的研究;yehanwin@mail.ustc.edu.cn。 通信作者:蒋晓东(1970-),男,研究员,主要从事高功率光学材料的研究;jiangxdong@163.com.
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