A study on burst-mode 500 ps fiber laser ablation in 304 stainless steel is presented. A 500 ps pulsed fiber laser with burst-mode operation was employed as the light source in our laser processing system. Under different laser parameters, the ablation results were observed and compared with scanning electron microscope photos. As the burst energy was 8 mJ and the pulse repetition rate was 2 MHz, a relatively good hole quality was obtained. The superiority of burst-mode operation is also discussed at the end of this article.

中文翻译：

---

304 不锈钢突发模式 500 ps 光纤激光烧蚀

介绍了在 304 不锈钢中进行突发模式 500 ps 光纤激光烧蚀的研究。在我们的激光加工系统中，采用具有突发模式操作的 500 ps 脉冲光纤激光器作为光源。观察不同激光参数下的烧蚀结果，并与扫描电镜照片进行对比。由于突发能量为8 mJ，脉冲重复率为2 MHz，因此获得了较好的孔质量。本文末尾还讨论了突发模式操作的优越性。