Spectroscopic properties and energy transfers in Tb3+/Ho3+/Yb3+ tri-doped oxyfluoride silicate glasses
Source abstract
Abstract
Abstract Upon excitation with a 980 nm laser diode (LD), the upconversion luminescence (UCL) properties of Tb3 +/Ho3 +/Yb3 + tri-doped oxyfluoride silicate glasses were investigated. Five distinct emissions peaked at 489, 543, 584, 623 and 662 nm are simultaneously observed and are assigned to the electronic transitions of Tb3 +: 5D4→7FJ (J = 6, 5, 4 and 3) and Ho3 +: 5F5→5I8, respectively. The effects of Tb3 + and Yb3 + concentrations on the emissions were studied. The log–log plots of the UCL intensity versus laser power show abnormal relations: the slopes are larger than those in previous reports, which could be attributed to the effect of intrinsic optical bistability (IOB) of Yb3 + ions. In addition, the UC mechanisms were discussed in this work.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Glass properties and applications · Solid State Laser Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (37)
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