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Pulse Shaping for Micro Cutting Applications of Metals with Fiber Lasers

机译:光纤激光器在金属微切割应用中的脉冲整形

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摘要

High power single mode fiber lasers are an excellent tool for micro cutting applications. In order to manage the heat input into the material most micro cutting applications require pulsed operation of the laser. Temporal pulse shaping is a proven and enabling technology for many laser welding applications with flash lamp pumped lasers where typical pulse lengths are in the order of 0.1 to 10 ms. The excellent controllability of diode pumped fiber lasers enables pulse shaping during the cutting process with a laser pulse length of typically less then 0.1 ms. For laser micro cutting applications a small kerf width with small HAZ and good surface finish defines the quality of the process. This paper shows the influence of the laser pulse shape on the cutting performance in stainless steel with diode pumped fiber lasers.
机译:高功率单模光纤激光器是微切割应用的绝佳工具。为了管理输入到材料中的热量,大多数微切割应用都需要对激光进行脉冲操作。时间脉冲整形是一种经过验证的使能技术,适用于闪光灯脉冲泵浦激光器的许多激光焊接应用,典型脉冲长度约为0.1到10 ms。二极管泵浦光纤激光器具有出色的可控性,可在切割过程中进行脉冲整形,激光脉冲长度通常小于0.1 ms。对于激光微切割应用,小切口宽度和小热影响区以及良好的表面光洁度决定了工艺的质量。本文显示了激光脉冲形状对二极管泵浦光纤激光器在不锈钢中切削性能的影响。

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