Abstract
We demonstrate a highly efficient and high power Ho3+-doped fluoride glass fiber laser that is resonantly pumped with a Tm 3+-doped silicate glass fiber laser operating at 2.051 μm. The laser operates at 2080 nm and generated 6.66 W at a slope efficiency of 72%. We observe strong visible upconversion fluorescence centered at a variety of wavelengths including 491 nm which results from three sequential energy transfer upconversion processes; the fluorescence to pump energy ratio for this emission is one the largest reported to date.
Original language | English |
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Pages (from-to) | 20164-20169 |
Number of pages | 6 |
Journal | Optics Express |
Volume | 18 |
Issue number | 19 |
DOIs | |
Publication status | Published - 13 Sept 2010 |
Externally published | Yes |