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Proceedings Paper

Shadowgraphic and interferometric investigations on Nd:YAG laser-induced vapor/plasma plumes for different processing wavelengths
Author(s): Detlef Breitling; Henrik Schittenhelm; Peter Berger; Friedrich Dausinger; Helmut Huegel
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Paper Abstract

Shadowgraphic and interferometric analysis of vapor/plasma plumes generated by pulses of a ns-Nd:YAG laser display a distinctive morphology for each of three different processing wavelengths (1064 nm, 532 nm, and 355 nm). Analytical models of shock wave expansion can be applied to determine the total energy stored within the plumes. Electron density distribution measurements reveal the regions of absorption and, using a simple model of inverse bremsstrahlung and photoionization, allow us to estimate absorption coefficients.

Paper Details

Date Published: 25 January 2001
PDF: 5 pages
Proc. SPIE 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (25 January 2001); doi: 10.1117/12.413994
Show Author Affiliations
Detlef Breitling, Univ. Stuttgart (Germany)
Henrik Schittenhelm, Univ. Stuttgart (United States)
Peter Berger, Univ. Stuttgart (Germany)
Friedrich Dausinger, Univ. Stuttgart (Germany)
Helmut Huegel, Univ. Stuttgart (Germany)

Published in SPIE Proceedings Vol. 4184:
XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference
Antonio Lapucci; Marco Ciofini, Editor(s)

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