Photo-induced bleaching and thermally stimulated recovery of BAC-P in Bi-doped phosphosilicate fibers

Qiancheng Zhao, Qun Hao, Yanhua Luo, Xiaochong Li, Shiyu Cui, Fengze Tan, Changyuan Yu, Gang Ding Peng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


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 (≥300C). 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 languageEnglish
Pages (from-to)5389-5392
Number of pages4
JournalOptics Letters
Issue number19
Publication statusPublished - 1 Oct 2020

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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