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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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Richardson, David J.
University of Southampton
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (35/35 displayed)
- 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
- 2023Optical time domain reflectometry for hollow core optical fibres
- 2023Loss in hollow-core fibers: mechanisms, scaling rules, and limitscitations
- 2021Hollow-core-fiber delivery of broadband mid-infrared light for remote multi-species spectroscopy
- 2021Gas-induced differential refractive index enhanced guidance in hollow-core optical fiberscitations
- 2021Compact chirped-pulse amplification systems based on highly Tm3+ doped germanate fibercitations
- 2021Bi-doped fiber amplifiers for ultra-wideband optical communication systemscitations
- 2020Extruded tellurite antiresonant hollow core fiber for mid-IR operationcitations
- 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
- 2018Novel fiber design for wideband conversion and amplification in multimode fiberscitations
- 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
- 2015MicroStructure Element Method (MSEM): viscous flow model for the virtual draw of microstructured optical fiberscitations
- 2015Accurate modelling of fabricated hollow-core photonic bandgap fiberscitations
- 2015Anti-resonant hexagram hollow core fiberscitations
- 2014X-ray tomography for structural analysis of microstructured and multimaterial optical fibers and preformscitations
- 20111.06 µm picosecond pulsed, normal dispersion pumping for generating efficient broadband infrared supercontinuum in meter-length single-mode tellurite holey fiber with high Raman gain coefficientcitations
- 2010Dispersion controlled highly nonlinear fibers for all optical processing at telecoms wavelengthscitations
- 2010Near-zero dispersion, highly nonlinear lead-silicate W-type fiber for applications at 1.55µmcitations
- 2010Efficient near-infrared supercontinuum generation in tellurite holey fiber pumped 320nm within the normal dispersion regime
- 2009Optical fiber nanowires and microwires: fabrication and applicationscitations
- 2009Dispersion-shifted all-solid high index-contrast microstructured optical fiber for nonlinear applications at 1.55µmcitations
- 2009Four-wave mixing-based wavelength conversion in a short-length of a solid 1D microstructured fibre
- 2008Developing single-mode tellurite glass holey fiber for infrared nonlinear applications
- 2008Single-mode tellurite glass holey fiber with extremely large mode area for infrared nonlinear applicationscitations
- 2007RGB generation by four-wave mixing in small-core holey fibers
- 2006Non-silica microstructured optical fibers for mid-IR supercontinuum generation from 2 µm - 5 µmcitations
- 2006Optimisation of cascaded Yb fiber amplifier chains using numerical-modellingcitations
- 2004Recent advances in high power fiber lasers
- 2003Fiber lasers: flexible and functional solutions for today and the future
- 2002Synchronously pumped optical parametric oscillator driven by a femtosecond mode-locked fibre lasercitations
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>