Takenaka Y, Nishimae J, Tanaka M, Motoki Y
Opt Lett. 1997 Jan 1;22(1):37-9. doi: 10.1364/ol.22.000037.
A novel resonator, the Gauss-core resonator, based on a stable resonator configuration designed to yield a highly focusing beam operating in a large-volume TEM(00) mode, is presented. A 6.2 kW linearly polarized output beam with an M(2) factor of 1.7 is obtained experimentally for a high-power cw CO(2) laser. The capability of the Gauss-core resonator to process laser materials is also studied. We can cut 1-mm-thick mild (soft) steel with a maximum cutting speed of 58 m/min at 5.6 kW and 0.2-mm-thick steel 145 m/min at 2.8 kW.
本文介绍了一种新型谐振器——高斯芯谐振器，它基于一种稳定的谐振器配置设计而成，旨在产生在大体积TEM(00)模式下运行的高度聚焦光束。对于高功率连续波CO(2)激光器，通过实验获得了一束功率为6.2千瓦、M(2)因子为1.7的线偏振输出光束。还研究了高斯芯谐振器加工激光材料的能力。我们能够在5.6千瓦功率下以最高58米/分钟的切割速度切割1毫米厚的低碳（软）钢，在2.8千瓦功率下以145米/分钟的速度切割0.2毫米厚的钢。
