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激光切割、焊接是激光加工的重要应用方面,由于光束质量的限制,我国生产的高功率CO_2激光器多数用在热处理领域。最近,我们在2kW 多模输出的闭环横流 CO_2激光器上,成功地获得了千瓦级低阶模(TEM_(mn),m+n≤2)激光输出,并对一些金属材料进行了切割、焊接试验。实验用的千瓦级低阶模激光器结构参见
Laser cutting and welding are important applications of laser processing. Due to the limitation of beam quality, most high-power CO 2 lasers produced in China are used in the field of heat treatment. Recently, we have succeeded in obtaining laser output in the order of TEM_ (mn) and m + n≤2 on a 2kW multi-mode closed-loop cross-flow CO_2 laser and cutting and welding tests on some metal materials . The experimental kilowatt-class low-order mode laser structure see