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

fYear

2002

fDate

2002

Firstpage

277

Lastpage

280

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;

fLanguage

English

Publisher

ieee

Conference_Titel

4thLaser and Fiber-Optical Networks Modeling, 2002. Proceedings of LFNM 2002. International Workshop on

Print_ISBN

0-7803-7372-3

Type

conf

DOI

10.1109/LFNM.2002.1014199

Filename

1014199