Abstract
Laser emission in the range of 1.88-1.99 μm from a Tm3+-doped tellurite fiber is demonstrated when pumped with a diode-pumped Er 3+/Yb3+-doped silica fiber laser operating at 1.57-1.61 μm. This pump source excites the Tm3+ ions directly into the 3F4 upper laser level and yields an output power of 280 mW with a slope efficiency of 76% in a 99%-12% laser cavity arrangement and a 32 cm long fiber. This result is very close to the Stokes efficiency limit of ∼80%. This is, to the authors' knowledge, the first demonstration of high efficiency lasing in a tellurite fiber at wavelengths longer than 1.56 μm. © 2008 Optical Society of America.
Original language | English |
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Pages (from-to) | 402-404 |
Number of pages | 2 |
Journal | Optics Letters |
Volume | 33 |
Issue number | 4 |
DOIs | |
Publication status | Published - 15 Feb 2008 |
Keywords
- EMISSION
- GLASSES