Fluorescence spectrum of an Yb:Er:Tm:Ho Doped Germanate Glass

Albalawi, Ali; Kochanowicz, Marcin; Żmojda, Jacek; Miluski, Piotr; Dorosz, Dominik; Taccheo, S.

doi:10.1364/assl.2018.atu2a.4

Cited by 7 publications

(3 citation statements)

References 4 publications

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“…It has a core diameter of d co = 4 μm and a numerical aperture of NA = 0.17, with a V-number equal to V = 2π Values reported in Table I are taken from multiple sources which authors expect to provide a reliable set of parameters. Simulations provide an initial educated guess of optimal condition, a following fine tuning of the optimal laser design could be required and an experimental evaluation of the four-fold doped system [9] is planned in the near future. Nevertheless, the illustrated optimization methodology is based on a general and feasible approach which can be applied to other multidoped glass systems.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…The model of the Tm:Er:Yb:Ho rare earth system, optically pumped at λ p = 980 nm, includes a total of 11 energy levels [9], This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see http://creativecommons.org/licenses/by/4.0/ as follows: i) 4 I 15/2 , 4 I 13/2 and 4 I 11/2 for the erbium ions; ii) 2 F 7/2 and 2 F 5/2 for the ytterbium ions; iii) 3 H 6 , 3 F 4 and 3 H 5 for the thulium ions; iv) 5 I 8 , 5 I 7 and 5 I 6 for the holmium ions.…”

Section: Tm:er:yb:ho Laser Modelmentioning

confidence: 99%

See 1 more Smart Citation

Design of a Multi-Wavelength Fiber Laser Based on Tm:Er:Yb:Ho Co-Doped Germanate Glass

Falconi

Laneve

Portosi

et al. 2020

J. Lightwave Technol.

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In this article, for the first time, an efficient multiwavelength fiber laser based on a Tm:Er:Yb:Ho co-doped germanate glass, optically pumped at 980 nm wavelength and simultaneously emitting at 1550 nm, 1800 nm and 2050 nm wavelengths, is designed and optimized. An exhaustive model, taking into account the energy transfer phenomena between different rare earths, is developed. The device behavior is investigated by means of several parametric sweeps with respect to the input pump power, the fiber length, the dopant concentrations and the output mirrors reflectivities. Four optimal concentrations have been found by means of a home-made computer code based on particle swarm optimization (PSO) approach, allowing a global solution search. These concentrations allow levels of output powers very close to each other, equal to 20 mW ± 0.1% at 1550 nm, 1800 nm and 2050 nm, respectively. These results predict the possibility of tailoring the dopant concentrations in order to construct broadband optical sources with similar emission powers at multiple wavelengths and broadband amplifiers.

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Section: Numerical Resultsmentioning

confidence: 99%

Section: Tm:er:yb:ho Laser Modelmentioning

confidence: 99%

Design of a Multi-Wavelength Fiber Laser Based on Tm:Er:Yb:Ho Co-Doped Germanate Glass

Falconi

Laneve

Portosi

et al. 2020

J. Lightwave Technol.

View full text Add to dashboard Cite

show abstract

“…For ∼ 2.1 μm laser operation, Ho 3+ is usually co-doped with Tm 3+ , Yb 3+ or Er 3+ as sensitizer ions. Some theoretical spectroscopic studies have also reported the tri-doped [ 87 , 88 ] or four ion doping [ 89 , 90 ] in germanate glass for multi-wavelength tunable laser operation including 2.1 μm. The results for multiple ion systems are, however, not yet experimentally validated and there is still gap in knowledge in this area.…”

Section: Ho 3+ Doping For ∼ 2 μM Laser Applicationmentioning

confidence: 99%