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| Naji, M. |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Azam, Siraj |
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| Ali, M. A. |
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| Rančić, M. |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Shimotsuma, Yasuhiko
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Publications (5/5 displayed)
- 2024Crystalline / glass nanoscale chemical separation induced by femtosecond laser pulses in aluminosilicate glasscitations
- 2015Direct laser-writing of ferroelectric single-crystal waveguide architectures in glass for 3D integrated opticscitations
- 2013A Driveless Read System for Permanently Recorded Data in Fused Silicacitations
- 2005Three-Dimensional Micro- and Nano-Fabrication in Transparent Materials by Femtosecond Lasercitations
- 2005NANO-MODIFICATION INSIDE TRANSPARENT MATERIALS BY FEMTOSECOND LASER SINGLE BEAMcitations
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article
NANO-MODIFICATION INSIDE TRANSPARENT MATERIALS BY FEMTOSECOND LASER SINGLE BEAM
Abstract
<jats:p>Periodic nanostructures along the polarization direction of light are observed inside silica glasses and tellurium dioxide single crystal after irradiation by a focused single femtosecond laser beam. Backscattering electron images of the irradiated spot inside silica glass reveal a periodic structure of stripe-like regions of ~20 nm width with a low oxygen concentration. In the case of the tellurium dioxide single crystal, secondary electron images within the focal spot show the formation of a periodic structure of voids with ~30 nm width. Oxygen defects in a silica glass and voids in a tellurium dioxide single crystal are aligned perpendicular to the laser polarization direction. These are the smallest nanostructures below the diffraction limit of light, which are formed inside transparent materials. The phenomenon is interpreted in terms of interference between the incident light field and the electric field of electron plasma wave generated in the bulk of material.</jats:p>