| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Núñez-Velázquez, Martin Miguel Angel
University of Southampton
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2022Temperature dependent characteristics of L-band EDFA using phosphorus- and High Aluminum- Co-doped Silica Fiberscitations
- 2022Temperature-dependent study on L-band EDFA characteristics pumped at 980nm and 1480nm in phosphorus and aluminum-rich erbium-doped silica fiberscitations
- 2020Enhancement of nonlinear functionality of step-index silica fibers combining thermal poling and 2D materials depositioncitations
- 2020Development of Tm:Ho co-doped silica fiber for high-power operation at 2.1μm
- 2020Optical fibers fabricated from 3D printed silica preformscitations
- 2020Study on the dopant concentration ratio in thulium-holmium doped silica fibers for lasing at 2.1µmcitations
- 2020Efficient cladding pump Tmcitations
- 2019Pulsed Yb-doped phospho-silicate fiber MOPA source with 25kW peak power and excellent beam quality
- 2019Impact of the electrical configuration on the thermal poling of optical fibres with embedded electrodes: Theory and experiments
- 2019Impact of the electrical configuration on the thermal poling of optical fibres with embedded electrodes: Theory and experiments
- 2018Additive manufacturing towards fabrication of next generation of optical fibres
- 2018Speciality optical fibre fabricated by outside vapour deposition process
- 2015Highly efficient Yb-free Er-La-Al doped ultra low NA large mode area single-trench fiber lasercitations
- 2014Thermally-stimulated emission analysis of bismuth-doped silica fiberscitations
- 2014Characterization of fluorescence lifetime of Tm-doped fibers with increased quantum conversion efficiencycitations
- 2014Investigations into the growth of GaN nanowires by MOCVD using azidotrimethylsilane as nitrogen source
- 2014Extending single mode performance of all-solid large-mode-area single trench fibercitations
Places of action
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document
Pulsed Yb-doped phospho-silicate fiber MOPA source with 25kW peak power and excellent beam quality
Abstract
With ytterbium doped fiber (YDF) lasers and amplifiers have reached continuous wave output power of multi-kW with direct diode pumping [1] and 10kW with tandem pumping [2] in a good beam quality, today fiber lasers are becoming the laser choice for many industrial applications and processes, defense, and scientific research. One of the challenges of high average power fiber laser is to maintain a long-term stability of the output power. In particular, photodarkening (PD) is seen as a power loss in YDF gain medium that can significantly influence the operation lifetime of the device. Moreover, it was observed that the PD is related to the transverse mode instability (TMI) that can limit the output power of the laser [3]. Here we report an efficient Yb-PS high power laser fiber fabricated using an optimized MCVD (modified chemical vapor deposition) and all-vapor -phase chelate precursor doping technique. Double -clad fi ber with a 150µm quasi-octagonal inner cladding and a 12i.tm core diameter was drawn with a low index polymer outer cladding. The core NA was 0.1, Fig.1 (a). The small signal absorption at the pump wavelength of -976nm was measured as 2.5 dB/m. Initially the fiber was tested in a 4%-4% laser cavity. An output power of >100W (limited by the available pump power) and the slope efficiency of >85% were obtained. The laser emission was centered at 1066nm.