Shadow photography of laser-driven shock waves in air

Author

Kowalewicz ; Eberl

Author_Institution

Dept. of Phys., Erlangen-Nurnberg Univ., Germany

Volume

24

Issue

1

fYear

1996

fDate

2/1/1996 12:00:00 AM

Firstpage

43

Lastpage

44

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;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.491682

Filename

491682