Laser pulse duration dependence of blister formation on back-radiated Ti thin films for BB-LIFT
Laser pulse duration dependence of blister formation on back-radiated Ti thin films for BB-LIFT
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BB-LIFT 背辐射钛薄膜上气泡形成的激光脉冲持续时间依赖性
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
E. Campbell
中科院分区：
文献类型：
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作者：
N. Goodfriend;S. V. Starinskiy;O. Nerushev;N. Bulgakova;A. Bulgakov;E. Campbell
研究了激光脉冲宽度对基于气泡的激光诱导前向传输技术中气泡形成机理的影响。使用来自fs Ti：Sapphire激光器（120 fs，800 nm）和来自ns Nd：YAG激光器（7 ns，532 nm）的脉冲来直接比较在约100 nm的薄钛膜上的气泡形成。300 nm厚度，沉积在玻璃上。利用光学显微镜和原子力显微镜对不同的气泡形貌进行了比较和对比。结果提供了证据不同的气泡形成机制：飞秒脉冲的机制主要是在金属-玻璃界面的烧蚀伴随着有限的等离子体膨胀和变形的剩余金属膜;纳秒脉冲是加热伴随着热膨胀的金属膜。
The influence of the laser pulse duration on the mechanism of blister formation in the particle transfer technique, blister-based laser-induced forward transfer, was investigated. Pulses from a fs Ti:Sapphire laser (120 fs, 800 nm) and from a ns Nd:YAG laser (7 ns, 532 nm) were used to directly compare blister formation on thin titanium films of ca. 300 nm thickness, deposited on glass. The different blister morphologies were compared and contrasted by using optical microscopy and atomic force microscopy. The results provide evidence for different blister formation mechanisms: for fs pulses the mechanism is predominantly ablation at the metal–glass interface accompanied by confined plasma expansion and deformation of the remaining metal film; for ns pulses it is heating accompanied by thermal expansion of the metal film.