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Ultraviolet versus infrared: Effects of ablation laser wavelength on the expansion of laser-induced plasma into one-atmosphere argon gas
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10.1063/1.3689300
/content/aip/journal/jap/111/5/10.1063/1.3689300
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/5/10.1063/1.3689300

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Experimental setup.

Image of FIG. 2.
FIG. 2.

(Color online) Parts of emission spectrum of the plasma including the three chosen lines for the study of the plasma propagation, Al II 281.6, Ar I 696.5 nm, and Ar II 437.1 nm lines.

Image of FIG. 3.
FIG. 3.

(Color online) Line-of-sight integrated normalized emission intensity as function of the axial distance for the element evaporated from the target (aluminum) and the background gas (argon) for different detection delays and the two ablation laser wavelengths. (a) Al II line at 281.6 nm; (b) Ar I line at 696.5 nm and Ar II line at 437.1 nm for the case of IR ablation.

Image of FIG. 4.
FIG. 4.

(Color online) Normalized transverse line-of-sight integrated intensity profiles and corresponding emissivities obtained with the Abel inversion at the different delays. (a) Aluminum for UV ablation; (b) aluminum for IR ablation; (c) argon for UV ablation; (d) argon for IR ablation.

Image of FIG. 5.
FIG. 5.

(Color online) Axial profiles of electron density (a) and temperature (b) for UV and IR ablations.

Image of FIG. 6.
FIG. 6.

(Color online) Radial profiles of electron temperature for UV (a) and IR (b) ablations at a distance of z = 0.5 mm for UV and z = 0.8 mm for IR from the target surface.

Image of FIG. 7.
FIG. 7.

(Color online) Normalized radical element number density profiles of Al and Ar for UV (a) and IR (b) ablations at a distance z = 0.5 mm for UV ablation and z = 0.8 mm for IR ablation from the target surface.

Tables

Generic image for table
Table I.

Aspect ratio between axial and transverse expansions of aluminum plasma for UV and IR ablations.

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/content/aip/journal/jap/111/5/10.1063/1.3689300
2012-03-02
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultraviolet versus infrared: Effects of ablation laser wavelength on the expansion of laser-induced plasma into one-atmosphere argon gas
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/5/10.1063/1.3689300
10.1063/1.3689300
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