Petit Stephane, Kérourédan Olivia, Devillard Raphael, Cormier Eric
Appl Opt. 2017 Nov 1;56(31):8648-8655. doi: 10.1364/AO.56.008648.
We investigate the properties of microjets in the context of film-free laser induced forward transfer in the femtosecond and picosecond regimes. The influence of the pulse duration (ranging from 0.4 to 12 ps) and the energy (ranging from 6 to 12 μJ) is systematically studied on the height, diameter, speed, volume, and shape of the jets. The 400 fs pulses generate thin and stable jets compatible with bioprinting, while 14 ps pulses generate more unstable jets. A pulse duration around 8 ps seems, therefore, to be an interesting trade-off to cover many bio-applications of microjets generated by lasers.
我们在飞秒和皮秒 regime 下无膜激光诱导正向转移的背景下研究微射流的特性。系统地研究了脉冲持续时间（范围从0.4到12皮秒）和能量（范围从6到12微焦）对射流的高度、直径、速度、体积和形状的影响。400飞秒脉冲产生与生物打印兼容的细而稳定的射流，而14皮秒脉冲产生更不稳定的射流。因此，大约8皮秒的脉冲持续时间似乎是一个有趣的折衷方案，以涵盖由激光产生的微射流的许多生物应用。
