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Adjustment of ablation shapes and subwavelength ripples based on electron dynamics control by designing femtosecond laser pulse trains
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10.1063/1.4765671
/content/aip/journal/jap/112/10/10.1063/1.4765671
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/10/10.1063/1.4765671

Figures

Image of FIG. 1.
FIG. 1.

Time-dependent intensities [the coupling field intensity between absorbed intensity and surface plasma intensity (blue line), surface plasma intensity (red line), and absorbed intensity (black line)] at r = 0, z = 0 nm by femtosecond pulse trains consisting of double pulses at the total fluence of 5.0 J/cm2 with the separation time of 50 fs: (a) 400 nm + 800 nm; (b) 800 nm + 400 nm; (c) 800 nm + 800 nm.

Image of FIG. 2.
FIG. 2.

Time-dependent electron densities, reflectivities, absorption coefficients, and electron temperatures at r = 0, z = 0 nm by femtosecond pulse trains consisting of double pulses at the total fluence of 5.0 J/cm2 with the separation time of 50 fs: (a)–(c) electron densities; (d)–(f) reflectivities and absorption coefficients; (g)–(i) electron temperatures.

Image of FIG. 3.
FIG. 3.

The ablation crater shapes, the radius-dependent absorbed intensity, and the radius-dependent free electron density by femtosecond pulse trains consisting of double pulses at the total fluence of 5.0 J/cm2 with the separation time of 50 fs: (a) ablation crater shapes by pulse trains of 400 nm + 800 nm, 800 nm + 400 nm, and 800 nm + 800 nm; (b) the radius-dependent absorbed intensity and the radius-dependent free electron density at 120 fs by the 800 nm + 800 nm pulse train.

Tables

Generic image for table
Table I.

The free electron density, the optical properties, and the free electron temperature at r = 0, z = 0 nm by different laser pulse trains.

Generic image for table
Table II.

The threshold fluence, the ablation depth, the ablation radius, and the spacing of subwavelength ripple by different laser pulse trains.

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/content/aip/journal/jap/112/10/10.1063/1.4765671
2012-11-21
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Adjustment of ablation shapes and subwavelength ripples based on electron dynamics control by designing femtosecond laser pulse trains
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/10/10.1063/1.4765671
10.1063/1.4765671
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