Title :
Images of femtosecond laser plasma plume expansion into background air
Author :
Yalçin, Serife ; Tsui, Ying Y. ; Fedosejevs, Robert
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Alberta, Edmonton, Alta., Canada
fDate :
4/1/2005 12:00:00 AM
Abstract :
Femtosecond laser produced plasma plume expansion from a copper target was investigated at background air pressures ranging from atmospheric pressures to 10-1 torr and pulse energies of 50-400 μJ (6×1013-5×1014 W/cm2). Spatially and temporally resolved plasma imaging measurements indicated two separate emission regions in the plasma as the plume expands at background pressures of 1-25 torr.
Keywords :
plasma diagnostics; plasma flow; 1 to 25 torr; 50 to 400 muJ; atmospheric pressure; background air pressure; copper target; emission regions; femtosecond laser plasma plume expansion; pulse energy; spatially resolved plasma imaging; temporally resolved plasma imaging; Atmospheric-pressure plasmas; Copper; Laser theory; Optical pulses; Plasma measurements; Plasma temperature; Plasma waves; Pulsed laser deposition; Spectroscopy; Surface emitting lasers; Femtosecond laser; plasma plume expansion;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2005.845359
