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A comparative schlieren imaging study between ns and sub-ps laser forward transfer of Cr

机译:ns和亚ps激光正向转移Cr之间的比较schlieren成像研究

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摘要

A comparative study of the effect of ultrashort (0.5 ps) and short (30 ns) pulses on the laser forward transfer of Cr is presented in this paper. The dynamics of the process was investigated by stroboscopic schlieren imaging for time delays up to 3μs following the laser irradiation pulse. In contrast to the ns laser, the directionality of the ejected material is very high in the case of the sub-ps laser process. The narrow angular divergence (3°) of the sub-ps pulses permits the direct dynamic transfer of the material and opens up new application possibilities for the fabrication of high spatial resolution microstructures.
机译:本文对超短脉冲(0.5 ps)和短脉冲(30 ns)对Cr的激光正向转移的影响进行了比较研究。通过频闪schlieren成像研究了该过程的动力学,其在激光辐照脉冲之后的时间延迟长达3μs。与ns激光器相比,在sub-ps激光器工艺中,喷射材料的方向性非常高。亚ps脉冲的窄角度发散角(3°)允许材料直接动态传递,并为制造高空间分辨率的微结构开辟了新的应用可能性。

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