Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 123, Issue 15, Pages 10021-10027Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.9b00359
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Funding
- National Natural Science Foundation of China [51872055, 61775045, 61805054, 61850410537, 61605030]
- Natural Science Foundation of Heilongjiang Province of China [F2017006]
- Fundamental Research Funds for the Central Universities
- 111 project [B13015]
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An ultrabroadband near-infrared (NIR) emission of Ni2+ is demonstrated in a highly transparent nanoglass ceramic (nano-GC) containing Ga2O3 nanocrystals with an 808 nm excitation of Nd3+. It is also shown that by adding Yb3+ as an energy-transfer (ET) bridge, the Ni2+ emission could be substantially enhanced. The dopant distribution was studied using advanced analytical transmission electron microscopy. This, together with optical transmission measurements and steady-state and time-resolved emission spectra, is utilized to understand the underlying ET mechanisms between Nd3+, Yb3+, and Ni2+. The feasibility of this device as a viable source is demonstrated using dual-laser pumping at 808 and 980 nm for the greatest Ni2+ emission enhancement reported to date. The Nd3+/Yb3+/Ni2+ triply doped nano-GC offers a promising gain medium for broadband and tunable NIR fiber amplifiers.
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