693.932 PEOPLE
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| Naji, M. |
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| Motta, Antonella |
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| Petrov, R. H. | Madrid |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Sahu, Jayanta Kumar
University of Southampton
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (64/64 displayed)
- 2023Er-Ce Co-doped aluminosilicate fibres for C and L-Band amplifiers
- 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
- 2021Bi-doped fiber amplifiers for ultra-wideband optical communication systemscitations
- 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
- 2020Performance characteristics of a multicore Interferometric Fiber Optic Gyroscope using a 7-Core fibercitations
- 201947 W continuous-wave 1726 nm thulium fiber laser core-pumped by an erbium fiber lasercitations
- 2019Bi-doped fiber amplifiers and lasers [Invited]citations
- 2019Pulsed Yb-doped phospho-silicate fiber MOPA source with 25kW peak power and excellent beam quality
- 2019Thulium-doped Fibre Laser with 25 W Single-mode Output at 1726 nmcitations
- 2019Impact of the electrical configuration on the thermal poling of optical fibres with embedded electrodes: Theory and experiments
- 2019High power 1726nm operation of a thulium fiber laser pumped in-band by an erbium-only fiber laser
- 2019Bismuth doped fiber for filtering applicationscitations
- 2018Additive manufacturing towards fabrication of next generation of optical fibres
- 2017Ultraviolet photoluminescence in Gd-doped silica and phosphosilicate fiberscitations
- 2017Holmium doped fibre optimised for resonant cladding pumping
- 2015Highly efficient Yb-free Er-La-Al doped ultra low NA large mode area single-trench fiber lasercitations
- 2015Cladding shaping of optical fibre preforms via CO2 laser machining
- 2015Experimental demonstration of single-mode large mode area multi-trench fiber for UV-VIS light transmission
- 2014Thermally-stimulated emission analysis of bismuth-doped silica fiberscitations
- 2014Robust single-mode all-solid multi-trench fiber with large effective mode areacitations
- 2014Characterization of fluorescence lifetime of Tm-doped fibers with increased quantum conversion efficiencycitations
- 2014Novel dielectric nanoparticles (DNP) doped nano-engineered glass based optical fiber for fiber lasercitations
- 2014Multi-element fiber for next generation optical communication
- 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
- 2012Nano-engineered glass based optical fiber for fiber lasercitations
- 20125.4W cladding-pumped Nd:YAG silica fiber laser
- 2012Q-switched neodymium-doped Y3Al5O12-based silica fiber lasercitations
- 2011Double-pass erbium-doped zirconia fiber amplifier for wide-band and flat-gain operationscitations
- 2010Performance comparison of Zr-based and Bi-based erbium-doped fiber amplifierscitations
- 2010100W CW cladding-pumped Raman fiber last at 1120nmcitations
- 2010Modification of spectroscopic properties of Bismuth doped silica fiber by post-fabrication process and different fabrication methods
- 2010Micromachined multimode interference device in flat-fibercitations
- 2010Rare earth doped optical fiber fabrication using novel gas phase deposition techniquecitations
- 2010Novel technique for mode selection in a large-mode-area fiber laser
- 2010Multi-watts narrow-linewidth all fiber Yb-doped laser operating at 1179 nmcitations
- 2010Wideband EDFA based in erbium doped crystalline zirconia yttria alumino silicate fibercitations
- 2010MCVD in-situ solution doping process for the fabrication of complex design large core rare-earth doped fiberscitations
- 2010Yb2O3-doped YAG nano-crystallites in silica-based core glass matrix of optical fiber preformcitations
- 2010Bend-effects on Brillouin gain in large mode area fiber amplifiers with acoustic antiguide
- 2010Ytterbium-doped Y2O3 nanoparticle silica optical fibers for high power fiber lasers with suppressed photodarkeningcitations
- 2009High power thulium doped fiber laserscitations
- 2009Fiber design for high power fiber laserscitations
- 2009Ytterbium doped nanostructured optical fibers for high power fiber lasers
- 2008Reply to comment on “Photodarkening in Yb-doped aluminosilicate fibers induced by 488 nm irradiation”citations
- 2008High-power linearly-polarized operation of a cladding-pumped Yb fibre laser using a volume Bragg grating for wavelength selectioncitations
- 2006Spectral control of optical gain in a rare earth-doped optical fiber using novel triple layered structurescitations
- 2006Highly efficient erbium-ytterbium co-doped fibre laser with 188W output power at 1565nmcitations
- 2006New Yb:Hf-doped silica fiber for high-power fiber laserscitations
- 2006Optimisation of cascaded Yb fiber amplifier chains using numerical-modellingcitations
- 2006Temperature-dependent fluorescence characteristics of an ytterbium-sensitized erbium-doped silica fiber for sensor applicationscitations
- 2005High-power and ultra-efficient operation of a Tm3+-doped silica fiber laser
- 2005Doppler velocimetry using self-mixing effect in a short Er-Yb-doped phosphate glass fiber lasercitations
- 2004High-power wavelength-tunable cladding-pumped rare-earth-doped silica fiber laserscitations
- 2004Recent advances in high power fiber lasers
- 2004Passively Q-switched thulium-doped silica fiber laser
- 2004Thulium-ytterbium co-doped fiber laser with 32W of output power in the 2 micron wavelength range
- 2004Efficient holmium-doped solid-state lasers pumped by a Tm-doped silica fiber lasercitations
- 2003Fiber lasers: flexible and functional solutions for today and the future
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article
Study on the dopant concentration ratio in thulium-holmium doped silica fibers for lasing at 2.1µm
Abstract
We present the fabrication and laser performance of thulium-holmium co-doped silica fibers when cladding pumped at ∼790 nm. By using the hybrid gas phase-solution doping process in conjunction with the MCVD preform fabrication technique, the doping concentration and the Tm:Ho ratio were varied to study the energy transfer efficiency from Tm<sup>3+</sup> to Ho<sup>3+</sup>. Our study indicates that for a thulium concentration that has resulted in an efficient two-for-one cross- relaxation process with 790 nm pumping, and while maintaining a Tm:Ho concentration ratio in the range ∼ 10 to 20, the energy transfer efficiency has reached above 75%. In a free-running laser cavity, the pump power limited laser output of 38W with a slope efficiency of 56% at 2.1 microns is demonstrated.