Kočica Jernej Jan, Mur Jaka, Petelin Jaka, Petkovšek Rok
Opt Express. 2021 Jul 19;29(15):22868-22882. doi: 10.1364/OE.428704.
The intermediate pulse duration regime between typical ultra-short and nanosecond pulses has been investigated using MHz-range bursts of 70 ps pulses emitted from a custom-made fiber laser source. The goal of this study was to observe and understand the processes involved during laser ablation on the timescales from picoseconds to nanoseconds, relevant due to pulses in bursts. We developed material processing approaches that enable similar behaviour as single 70 ps pulse ablation to ultra-short pulses in terms of quality and burst-mode behaviour like nanosecond pulses in terms of efficiency. The variability of the fiber laser operation modes was studied and compared to both ultra-short and nanosecond pulses from standard laser sources.
利用定制光纤激光源发射的70皮秒脉冲的兆赫兹范围脉冲串，对典型超短脉冲和纳秒脉冲之间的中间脉冲持续时间 regime 进行了研究。本研究的目的是观察和理解在皮秒到纳秒时间尺度上激光烧蚀过程中所涉及的过程，由于脉冲串中的脉冲，这些过程具有相关性。我们开发了材料加工方法，在质量方面能够实现与单个70皮秒脉冲烧蚀类似的行为，在效率方面能够实现与纳秒脉冲类似的超短脉冲的脉冲串模式行为。研究了光纤激光运行模式的可变性，并与标准激光源的超短脉冲和纳秒脉冲进行了比较。
