Title :
Shadow photography of laser-driven shock waves in air
Author :
Kowalewicz ; Eberl
Author_Institution :
Dept. of Phys., Erlangen-Nurnberg Univ., Germany
fDate :
2/1/1996 12:00:00 AM
Abstract :
The interaction of a pulsed TE-CO2-laser (10.6 μm wavelength, 7 μs pulse length, 0.7 J pulse energy, 107 W/cm2 power density, 100 kW mean power) with metals in air was investigated. Laser-supported absorption phenomena and material ablation processes are compared to those of conventional pulsed TEA-CO 2-lasers. Of interest were the time-dependent plasma formation and the evolution of the shock waves. To achieve a time resolution better than 10 ns, a pulsed dye laser was used as a light source for the shadow photography
Keywords :
laser ablation; photography; plasma diagnostics; plasma production by laser; plasma shock waves; 0.7 J; 10.6 micrometre; 100 kW; air; laser-driven shock waves; laser-supported absorption phenomena; light source; material ablation; metals; pulsed TE-CO2-laser; pulsed dye laser; shadow photography; shock wave evolution; time resolution; time-dependent plasma formation; Absorption; Laser ablation; Optical materials; Optical pulses; Photography; Plasma density; Plasma materials processing; Plasma sources; Plasma waves; Shock waves;
Journal_Title :
Plasma Science, IEEE Transactions on
