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| Naji, M. |
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| Motta, Antonella |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Bih, L. |
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| Casati, R. |
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| Kočí, Jan | Prague |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Ali, M. A. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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Jain, D.
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Publications (5/5 displayed)
- 2019Ultra flat mid-infrared supercontinuum source based on concatenation of Thulium and Germania doped silica fibers
- 2015Highly efficient Yb-free Er-La-Al doped ultra low NA large mode area single-trench fiber lasercitations
- 2015Experimental demonstration of single-mode large mode area multi-trench fiber for UV-VIS light transmission
- 2014Multi Trench Fiber: an ultra large mode area solution for industrial manufacturing
- 2014Extending single mode performance of all-solid large-mode-area single trench fibercitations
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article
Highly efficient Yb-free Er-La-Al doped ultra low NA large mode area single-trench fiber laser
Abstract
We demonstrate a 60µm core diameter Yb free Er-La-Al doped single-trench fiber having a 0.038 ultra-low-NA, fabricated using conventional MCVD process in conjunction with solution doping technique. Numerical simulations predict an effective single mode operation with effective area varying from 1,820µm<sup>2</sup> to 1,960µm<sup>2</sup> (taking bend-induced modal distortion into account) for different thicknesses of trenches and resonant rings at a constant bend radius of 25cm. Moreover, all solid structure favors easy cleaving and splicing. Experimental measurements demonstrate a robust effective single mode operation. Furthermore, with a 4%-4% laser cavity, this fiber shows a record efficiency of 46% with respect to the absorbed pump power.