25 January 2001 Shadowgraphic and interferometric investigations on Nd:YAG laser-induced vapor/plasma plumes for different processing wavelengths
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Proceedings Volume 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference; (2001) https://doi.org/10.1117/12.413994
Event: XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, 2000, Florence, Italy
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.
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Detlef Breitling, Detlef Breitling, Henrik Schittenhelm, Henrik Schittenhelm, Peter Berger, Peter Berger, Friedrich Dausinger, Friedrich Dausinger, Helmut Huegel, Helmut Huegel, } "Shadowgraphic and interferometric investigations on Nd:YAG laser-induced vapor/plasma plumes for different processing wavelengths", 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; https://doi.org/10.1117/12.413994
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