C 2010 Society of Photo-Optical Instrumentation
Engineers.[DOI:10.1117/1.3502567]
Subject terms:high-speed photography;laser welding;laser capil-
lary;laser keyhole.
Paper 100489LR received Jun.14,2010;revised manuscript re-
ceived Sep.15,2010;accepted for publication Sep.21,2010;pub-
lished online Oct.29,2010.