Abstract
The first results of the study on photobleaching and thermally induced recovery in Bi-doped phosphosilicate fiber have been presented. It was revealed that the rate of bleaching of phosphor-related Bi active center (BAC-P) becomes slower with the decrease of photon energy. The quadratic dependence of the bleaching rate of BAC-P on laser power is obtained under 532 nm laser irradiation. The effect of temperature on the bleaching dynamics of BAC-P is also investigated under 532 nm radiation, suggesting a thermally aggravated bleaching process upon heating at certain temperatures (≥300◦C). Furthermore, the thermal recovery of bleached Bi-doped silica-based fiber (BDF) is investigated and a 13% increase of luminescence is achieved upon thermal quenching for 5 min at 400oC. The underlying mechanism of photobleaching and thermo-stimulated recovery process of BAC-P is also discussed.
Original language | English |
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Pages (from-to) | 5389-5392 |
Number of pages | 4 |
Journal | Optics Letters |
Volume | 45 |
Issue number | 19 |
DOIs | |
Publication status | Published - 1 Oct 2020 |