Abstract
An ytterbium sensitised praseodymium-doped double-clad upconversion fibre laser pumped at 840nm by a low brightness source is demonstrated. With a pump power of 3W launched in the 25μm pump core, a red output power of 440mW at 635nm is achieved.
| Original language | English |
|---|---|
| Pages (from-to) | 565-567 |
| Number of pages | 3 |
| Journal | Electronics Letters |
| Volume | 34 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 19 Mar 1998 |
| Externally published | Yes |
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