Mechanism of UV laser-induced absorption in fused silica fibers |
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Authors: | V P Pashinin N Yu Konstantinov V G Artjushenko V I Konov A S Silenok G Muller B Schaldach R Ulrich |
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Institution: |
a General Physics Institute, Academy of Sciences of Russia, Moscow, Russia
b Laser-Medizin-Zentrum GmbH, Berlin, Germany |
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Abstract: | An alteration of absorption spectra of fused silica fibers under delivery of high-power (ultraviolet) UV laser radiation (4th harmonic of the Nd:YAG laser, wavelength 266 nm) was studied in comparison with their photoluminescent properties. Tested fibers were produced by various technologies based on PMCVD methods. The nature of defects responsible for UV absorption in fibers and the mechanisms of their photogeneration are discussed. |
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