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| LEADER |
01308 am a22001813u 4500 |
| 001 |
13619 |
| 042 |
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|a dc
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| 100 |
1 |
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|a Chiodini, N.
|e author
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| 700 |
1 |
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|a Ghidini, S.
|e author
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1 |
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|a Paleari, A.
|e author
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1 |
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|a Brambilla, G.
|e author
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| 700 |
1 |
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|a Pruneri, V.
|e author
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| 245 |
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|a Photoinduced processes in Sn-doped silica fiber-preforms
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| 260 |
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|c 2000.
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| 856 |
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|z Get fulltext
|u https://eprints.soton.ac.uk/13619/1/2060.pdf
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| 520 |
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|a Effects induced by KrF ultraviolet excimer laser on Sn-doped silica fiber performs were analyzed by means of optical and electron paramagnetic resonance (EPR) techniques. Bond breaking in substitutional Sn sites was evidenced by the Sn-E EPR signal due to sp3 unpaired electrons in threefold coordinated Sn sites. Red photoluminescence excited at 633 nm, due to nonbridging-oxygen sites, was also observed after laser exposure. The intensity of this emission did not follow the Sn concentration profile, being observed at the core-cladding interface and in the core center. Birefringence data showed that these effects are accompanied by stress relief in the Sn-doped region. Different structural features of core and cladding were evidenced by micro-Raman measurements and related to the observed photosensitivity.
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| 540 |
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|a accepted_manuscript
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|a Article
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