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Effect of laser parameters and assist gas on spectral response of silicon fibrous nanostructure
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10.1063/1.3505755
/content/aip/journal/jap/108/9/10.1063/1.3505755
http://aip.metastore.ingenta.com/content/aip/journal/jap/108/9/10.1063/1.3505755
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Bulk silicon (unprocessed) microstructure.

Image of FIG. 2.
FIG. 2.

SEM images of silicon nanofibrous structure irradiated in air ambient at C-polarization, repetition of 13 MHz, laser’s power of 13 W with pulsewidth of (a) 428 fs, (b) 714 fs, (c) 1428 fs, and (d) 3571 fs.

Image of FIG. 3.
FIG. 3.

SEM images of silicon nanofibrous structure irradiated in air ambient at C-polarization, pulse frequency of 13 MHz, laser’s power of 13 W with pulse frequency at (a) 4 MHz, (b) 8 MHz, (c) 13 MHz, and (d) 26 MHz.

Image of FIG. 4.
FIG. 4.

SEM images of cauliflowerlike structure created by laser irradiation with the present of nitrogen gas and pulse frequency at (a) 26 MHz, (b) 13 MHz, (c) 8 MHz, and (d) 4MHz.

Image of FIG. 5.
FIG. 5.

SEM images of nanostructure created by laser irradiation in air ambient with laser beam of (a) circular polarization laser beam (b) linear polarization.

Image of FIG. 6.
FIG. 6.

Reflection of unprocessed silicon sample with wavelength in range of .

Image of FIG. 7.
FIG. 7.

Reflection of samples irradiated in air ambient at various pulse durations.

Image of FIG. 8.
FIG. 8.

Reflection as of samples irradiated in air ambient at various pulse widths.

Image of FIG. 9.
FIG. 9.

Reflection of samples irradiated at various pulse widths with nitrogen background gas.

Image of FIG. 10.
FIG. 10.

Raman spectra of unprocessed silicon.

Image of FIG. 11.
FIG. 11.

Raman spectra of nanofibers created by laser irradiation in air ambient with various pulse durations.

Image of FIG. 12.
FIG. 12.

Raman spectra of nanofibers created by laser irradiation in air ambient with various pulse frequencies.

Image of FIG. 13.
FIG. 13.

Raman spectra of structures created by laser irradiation in nitrogen ambient with various pulse frequencies.

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/content/aip/journal/jap/108/9/10.1063/1.3505755
2010-11-11
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effect of laser parameters and assist gas on spectral response of silicon fibrous nanostructure
http://aip.metastore.ingenta.com/content/aip/journal/jap/108/9/10.1063/1.3505755
10.1063/1.3505755
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