Abstract
A high-power diode-cladding-pumped Ho3+-doped fluoride glass fiber laser operating in cascade mode is demonstrated. The 5I 6→5I7 and 5I 7→5I8 laser transitions produced 0:77W at a measured slope efficiency of 12.4% and 0:24Wat a measured slope efficiency of 5.2%, respectively. Using a long fiber length, which forced a large threshold for the 5I7→5I8 transition, a wavelength of 3:002 μm was measured at maximum output power, making this system the first watt-level fiber laser operating in the mid-IR.
| Original language | English |
|---|---|
| Pages (from-to) | 3642-3644 |
| Number of pages | 3 |
| Journal | Optics Letters |
| Volume | 36 |
| Issue number | 18 |
| DOIs | |
| Publication status | Published - 15 Sept 2011 |
| Externally published | Yes |
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