693.932 PEOPLE
| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Brambilla, Gilberto
University of Southampton
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (37/37 displayed)
- 2023Magnetic field sensing using laser written birefringent scattering medium
- 2022A high-precision extensometer system for ground displacement measurement using fiber Bragg gratingcitations
- 2022Functionalised optical fiber devices for nonlinear photonics: from high harmonics generation to frequency comb
- 2021Hollow-core antiresonant terahertz fiber-based TOPAS extruded from a 3D printer using a metal 3D printed nozzlecitations
- 2019Neutron Imaging With Li-Glass Based Multicore SCIntillating FIber (SCIFI)citations
- 2019Low bend loss femtosecond written waveguides exploiting microcrack enhanced modal confinement
- 2018Novel method for manufacturing optical fiber: extrusion and drawing of microstructured polymer optical fibers from a 3D printercitations
- 2018Novel method for manufacturing optical fibercitations
- 2017Ultraviolet photoluminescence in Gd-doped silica and phosphosilicate fiberscitations
- 2017All-fiber sixth harmonic generation of deep UVcitations
- 2016Phase matched parametric amplification via four-wave mixing in optical microfiberscitations
- 2016All-fiber fourth and fifth harmonic generation from a single sourcecitations
- 2013Single-mode tunable laser emission in the single-exciton regime from colloidal nanocrystalscitations
- 2012Chalcogenide microsphere fabricated from fiber tapers using contact with a high-temperature ceramic surfacecitations
- 2012High-Q bismuth silicate nonlinear glass microsphere resonatorscitations
- 2012Compact optical microfiber components based on small size piezoelectric ceramic transducer
- 2012On crystallographic orientation in crystal core optical fibers II: effects of taperingcitations
- 2011Chalcogenide microsphere fabricated from fibre taper-drawn using resistive heating
- 2011A compact broadband microfiber Bragg gratingcitations
- 2011Lead silicate glass microsphere resonators with absorption-limited Qcitations
- 2009Optical fiber nanowires and microwires: fabrication and applicationscitations
- 2009Ce-doped SiO2 optical fibers for remote radiation sensing and measurementcitations
- 2007Mid-IR supercontinuum generation from non-silica microstructured optical fiberscitations
- 2006Non-silica microstructured optical fibers for mid-IR supercontinuum generation from 2 µm - 5 µmcitations
- 2004Photosensitive properties of a tin-doped sodium silicate glass for direct ultraviolet writingcitations
- 2003Direct-UV writing of channel waveguides in a bulk photosensitive tin doped sodium silicate glass
- 2002Erbium doped nanostructured tin-silicate glass-ceramic compositescitations
- 2002Fiber Bragg gratings with ultra-high temperature-stability
- 2002Nonlinearity in poled tin-doped silica samples fabricated by sol-gel technique
- 2002Fiber Bragg gratings with enhanced thermal stabilitycitations
- 2001Vacuum ultraviolet absorption spectrum of photorefractive Sn-doped silica fiber preformscitations
- 2001Fibre optic sensors for impact-induced damage detection and assessment in composite materials
- 2001High temperature point sensor using tin-doped silica fiber gratings
- 2001Low velocity impact detection and damage assessment in composite materials using fibre Bragg grating sensors
- 2000Photoinduced processes in Sn-doped silica fiber-preformscitations
- 2000Bragg gratings in ternary SiO2 SnO2 Na2O optical glass fiberscitations
- 2000Vacuum ultra-violet absorption spectrum of photorefractive Sn-doped silica fiber preforms
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article
Vacuum ultraviolet absorption spectrum of photorefractive Sn-doped silica fiber preforms
Abstract
Vacuum ultraviolet (VUV) absorption data have been obtained up to 8.3 eV on Sn-doped silica fibre preforms. Measurements have been carried out before and after exposure to 248 nm radiation from KrF excimer laser. The absorption spectrum is composed of three structures peaking at about 4.9, 5.8 and 7 eV, with the absorption edge at about 8.2 eV. The main effect of 5 eV irradiation is the decrease of the spectral components at 4.9 and 7 eV, whereas a small increase of absorption intensity is only observed just below the band at 4.9 eV. According to the observed negative absorption changes in the whole region of point-defect bands one would expect a negative refractive index change, contrary to the positive change previously reported in optical fibres of the same composition. Structural modifications accompanying the defect photoconversion process are suggested to be responsible for positive refractive index changes.