Optical-vortex laser ablation.

Opt Express

Department of Applied Physics, Hokkaido University, Sapporo 060-8628, Japan.

Published: February 2010

Laser ablation of Ta plates using nanosecond optical vortex pulses was carried out, for the first time. It was suggested that owing to orbital angular momentum of optical vortex, clearer and smoother processed surfaces were obtained with less ablation threshold fluence, in comparison with the ablation by a nonvortex annular beam modified from a spatially Gaussian beam.

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Source
http://dx.doi.org/10.1364/OE.18.002144DOI Listing

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