Millisecond laser machining of transparent materials assisted by a nanosecond laser with different delays.
Millisecond laser machining of transparent materials assisted by a nanosecond laser with different delays.
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DOI：
10.1364/ol.41.002807
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发表时间：
2016-06
期刊：
影响因子：
3.6
通讯作者：
Yunxiang Pan;Xueming Lv;Hongchao Zhang;Jun Chen;B. Han;Z. Shen;Jian Lu;X. Ni
中科院分区：
文献类型：
--
作者：
Yunxiang Pan;Xueming Lv;Hongchao Zhang;Jun Chen;B. Han;Z. Shen;Jian Lu;X. Ni
将毫秒激光与纳秒激光相结合，用于透明材料的加工。研究了两束激光脉冲之间的延迟对加工效率和改性尺寸的影响。此外，激光支持的燃烧波（LSCW）被捕获在激光照射。对于锥形腔，发现了对应于最高加工效率的最佳延迟。随着延迟时间的减小，LSCW的修饰尺寸、寿命和强度均增大。缺陷的热协同效应、小改性位点的重叠效应以及LSCW的热辐射是导致这些现象的原因。
A millisecond laser combined with a nanosecond laser was applied to machining transparent materials. The influences of delay between the two laser pulses on processing efficiencies and modified sizes were studied. In addition, a laser-supported combustion wave (LSCW) was captured during laser irradiation. An optimal delay corresponding to the highest processing efficiency was found for cone-shaped cavities. The modified size as well as the lifetime and intensity of the LSCW increased with the delay decreasing. Thermal cooperation effects of defects, overlapping effects of small modified sites, and thermal radiation from LSCW result in all the phenomena.