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Femtosecond laser-induced modification of potassium-magnesium silicate glasses: An analysis of structural changes by near edge x-ray absorption spectroscopy
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10.1063/1.4723718
/content/aip/journal/apl/100/22/10.1063/1.4723718
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/22/10.1063/1.4723718

Figures

Image of FIG. 1.
FIG. 1.

Fs-laser pulse irradiated (scanned) areas on the potassium magnesium silicate glass sample for XANES K-edge investigations; schematically (left) and SFM topography of selected surface areas (right). The area marked in red in the left scheme in (b) illustrates the size of the probing XANES spot. Irradiation conditions: d x = 12.5 µm, d y = 16 µm, w 0 = 16.5 µm; D Mod = 11 µm (b) and D Mod = 22 µm (c), respectively.

Image of FIG. 2.
FIG. 2.

XANES (absorption) spectra of potassium magnesium silicate glass modified by fs-laser pulse irradiation at different peak fluences between F 0 = 0 J/cm2 (Reference) and F 0 = 5.2 J/cm2. For better visibility, the different spectra (normalized to unity at 1332.3 eV) are vertically shifted by 0.2. The results of least-squares fits to the data are shown as solid lines. As an example, the deconvolution of the reference spectrum into five individual peaks is shown as dashed curves.

Image of FIG. 3.
FIG. 3.

Magnesium K-edge position of fs-laser irradiated potassium magnesium silicate glass as a function of the peak laser fluence. The dotted line represents a least-squares-fit of the XANES data to a model considering the (fluence dependent) weighting of the non-modified irradiated area.

Tables

Generic image for table
Table I.

Compilation of the center position of peak A and the peak area ratios A/B and C/B for different peak fluences, all obtained from least-squares-fit based deconvolution of the experimental XANES spectra.

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/content/aip/journal/apl/100/22/10.1063/1.4723718
2012-05-29
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Femtosecond laser-induced modification of potassium-magnesium silicate glasses: An analysis of structural changes by near edge x-ray absorption spectroscopy
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/22/10.1063/1.4723718
10.1063/1.4723718
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