Journal
OPTICS LETTERS
Volume 45, Issue 5, Pages 1152-1155Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.386293
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Funding
- National Natural Science Foundation of China [61520106014, 61675032]
- Science and Technology Commission of Shanghai Municipality [SKLSFO2018-02]
- Overseas Expertise Introduction Project for Discipline Innovation [B18005]
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The thermal quenching effect has been systematically investigated in bismuth (Bi)-doped phosphogermanosilicate fiber with varying thermal conditions. For the first time, to the best of our knowledge, the activation of phosphor-related Bi active center (BAC-P) is achieved by thermal quenching at 400 degrees C with a heating time of 10 min, evidenced by the enhanced luminescence of BAGP (similar to 1.3 times) at 1300 nm. The experimental results reveal that a relatively low heating temperature with prolonged heating time stimulates the growth of BAC-P, whereas higher operating temperatures (>= 500 degrees C) result in the irreversible destruction of BAC-P. The underlying mechanism for the thermally stimulated BAC-P process is also analyzed and discussed. (C) 2020 Optical Society of America
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