Abstract
Infrared(IR)/ultraviolet(UV) dual wavelength laser cutting of austenitic stainless steels has been experimentally demonstrated. A 5- μm cw CO laser is used as the IR laser source and a KrF excimer laser as the UV laser source. It has been shown that the maximum cutting speeds can be considerably enhanced by mixing the KrF laser beam with the CO laser beam under O2 assist conditions. Such enhanced cutting performance can be obtained even when the ratio of the KrF laser average power to the total laser power is as low as 10 %.Infrared(IR)/ultraviolet(UV) dual wavelength laser cutting of austenitic stainless steels has been experimentally demonstrated. A 5- μm cw CO laser is used as the IR laser source and a KrF excimer laser as the UV laser source. It has been shown that the maximum cutting speeds can be considerably enhanced by mixing the KrF laser beam with the CO laser beam under O2 assist conditions. Such enhanced cutting performance can be obtained even when the ratio of the KrF laser average power to the total laser power is as low as 10 %.
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