Abstract
The upconversion quantum efficiency and power-conversion efficiency in Tb3+-Yb3+ codoped glass have been investigated theoretically by the cooperative sensitization rate equation model. Both efficiencies exhibited linear relations with pump-power density and decreased with Yb3+ concentration. It was found that the ratio of quantum efficiency to power-conversion efficiency is constant (0.56) and independent of pump-power density and Yb3+ concentration. The theoretical predictions were confirmed by the experimental results measured by an integrating sphere system. The absolute upconversion efficiency was estimated to be on the order of 10-4 in the pump-power density range of 40-96 W/cm2.
Original language | English (US) |
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Pages (from-to) | 456-459 |
Number of pages | 4 |
Journal | Journal of the Optical Society of America B: Optical Physics |
Volume | 30 |
Issue number | 2 |
DOIs | |
State | Published - Feb 2013 |
All Science Journal Classification (ASJC) codes
- Statistical and Nonlinear Physics
- Atomic and Molecular Physics, and Optics