Title :
Energy release in processing of tantalum with nanosecond Nd:glass laser pulse
Author :
Vorobyev, A.Y. ; Kokody, N.G. ; Kuzmichev, V.M.
Author_Institution :
TZ Dynamics, St. Catharines, Ont., Canada
Abstract :
The total energy involved in the interaction of nanosecond Nd:glass laser pulses with tantalum in oxygen at pressures of 760 Torr and 1 Torr has been investigated experimentally in the range of laser fluences between 0.05 and 6 J/cm2. It was found that for interactions in the range of laser fluences below 0.08 J/cm2, the total energy is equal to the energy of the laser pulse. At laser fluences above 0.08 J/cm2, a release of additional energy was observed at both oxygen pressures. The estimated contribution of chemical energy produced by the formation of tantalum pentoxide is not sufficient for the explanation of the observed additional energy release.
Keywords :
laser beam effects; laser materials processing; solid-state plasma; tantalum; 1 torr; 760 torr; Ta; Ta processing; chemical energy; energy release; laser fluence range; laser pulse energy; laser-material interactions; nanosecond Nd:glass laser pulses; oxygen pressure; plasma formation threshold; Chemical lasers; Electrical resistance measurement; Glass; Laser beams; Laser modes; Neodymium; Optical pulses; Plasma measurements; Plasma temperature; Pulse measurements;
Conference_Titel :
4thLaser and Fiber-Optical Networks Modeling, 2002. Proceedings of LFNM 2002. International Workshop on
Print_ISBN :
0-7803-7372-3
DOI :
10.1109/LFNM.2002.1014199
