Femtosecond and nanosecond laser polishing of rough polycrystalline diamond

The laser polishing of rough (roughness of 5 mu m) diamond plate using femtosecond and nanosecond pulses was realized for the first time. The effect of the angle of incidence, the number of passes, scanning speed, and laser fluence on the surface roughness was investigated and the optimal conditions were found. The initial roughness of the diamond plate was reduced by 5 times from 5 to 1 mu m for both femtosecond and nanosecond laser sources. The results indicate the prospects of laser polishing of rough polycrystalline diamond samples.

Automated summary

This study demonstrates for the first time the laser polishing of rough diamond plate using femtosecond and nanosecond pulses. The effects of various parameters on surface roughness were investigated, and the optimal conditions were identified. The initial roughness of the diamond plate was reduced by 5 times, indicating the promising prospects of laser polishing for rough polycrystalline diamond samples.