Mechanisms of UV-laser-induced absorption in fused silica fibers

摘要

Abstract: Alteration of absorption spectra of fused silica fibers under delivery of high power UV laser radiation (4th harmonic of Nd:YAG laser, wavelength 266 nm) was studied in comparison with their photoluminescence properties. Tested fibers were produced by various technologies based on PMCVD methods. The nature of defects responsible for UV absorption in fibers and mechanisms of their photogeneration are discussed.!17