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 |
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Pages (from-to) | 3642-3644 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 36 |
Issue number | 18 |
DOIs | |
Publication status | Published - 15 Sep 2011 |
Externally published | Yes |