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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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Jung, Yongmin
University of Southampton
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2024Microlens Hollow-Core Fiber Probes for Operando Raman Spectroscopy.
- 2024Double-clad antiresonant hollow-core fiber and its comparison with other fibers for multiphoton micro-endoscopycitations
- 2024Double-clad antiresonant hollow-core fiber and its comparison with other fibers for multiphoton micro-endoscopycitations
- 2021Compact chirped-pulse amplification systems based on highly Tm3+ doped germanate fibercitations
- 2020Ultra-low NA step-index large mode area Yb-doped fiber with a germanium doped cladding for high power pulse amplificationcitations
- 2019Highly efficient Tm3+ doped germanate large mode area single mode fiber lasercitations
- 2019Ultra-short wavelength operation of thulium doped fiber amplifiers and laserscitations
- 2019Highly efficient Tm 3+ doped germanate large mode area single mode fiber lasercitations
- 2017Elliptical core few mode fibers for multiple-input multiple output-free space division multiplexing transmissioncitations
- 2017Merging metamaterial and optical fiber technologies
- 2017Fibre-coupled photonic metadevices
- 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
- 2014Robust single-mode all-solid multi-trench fiber with large effective mode areacitations
- 2014Extending single mode performance of all-solid large-mode-area single trench fibercitations
- 2009Optical fiber nanowires and microwires: fabrication and applicationscitations
- 2008Observation of tunable bandpass characteristics in a hollow-optical-fiber-microstructured-fiber composite structure using bend-loss edge-shift effectscitations
Places of action
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article
Compact chirped-pulse amplification systems based on highly Tm3+ doped germanate fiber
Abstract
<p>We report the fabrication of a dual cladding large mode area thulium-doped germanate fiber (TDGF). The fiber has a core diameter of 20 µm, a high Tm<sup>3</sup><sup>+</sup> ion concentration of 3 cm<sup>3</sup> × 10<sup>20</sup>/cm<sup>3</sup>, and a hexagonal inner cladding to enhance pump absorption when cladding-pumped. Using a short fiber length, we demonstrate a compact 300 fs chirped-pulse amplification system operating at 1925 nm, investigating both core- and cladding-pumped implementations. By cladding pumping a 65 cm long fiber we produced an average power of 14.1 W (limited by thermally induced damage) and a peak power of 2.17 MW at a pulse repetition rate of 15.7 MHz. Core pumping a 19 cm length of TDGF produced 2.3 W of average-power and 16 MW peak-power pulses at 0.39 MHz. The performance is already comparable to the state-of-the-art success achieved with flexible silica fibers. Considering the rapid improvements in glass quality and the scope for further increasing the doping concentration, this fiber type holds great potential for pulsed fiber lasers in the 1.5-3 µm wavelength region.</p>