Numerical Modeling of in-Band Pumped Ho-Doped Silica Fiber Lasers

Wang, Jiachen; Simakov, Nikita; Hemming, Alexander; Carter, Adrian; Lee, Sang Bae; Lee, Kwanil

doi:10.1109/jlt.2018.2877817

Cited by 40 publications

(37 citation statements)

References 38 publications

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“…We note that the value of 2k estimated for our fiber, and validated by our model, is notably lower than the value 2k = 30% inferred in [40] for the fiber tested in [6], with a lower peak absorption of 70 dB/m. However the direct comparison is not relevant, since the fraction of paired ions is known to be highly dependent on the host composition [38,[44][45][46].…”

Section: Comparison With Numerical Modelingcontrasting

confidence: 54%

“…For holmium doped fibers, the literature shows that the concentration [OH] ranges typically between 0.01 ppm and 10 ppm. As for the fraction of ions in pair 2k, it can reach 30% [40], and we suppose that it could be reduced down to 20%. Considering a fiber with the dimensions and parameters listed in Table 1, the simulation is run for various values of [OH] and 2k.…”

Section: Discussion On the Power Limitationmentioning

confidence: 99%

“…The powers at the laser signal and pump wavelength are calculated along the fiber path by solving the usual rate and propagation equations [22,40], with the common approximation of the effective overlap integral between the active region and the propagating mode to suppress the radial dependence [15]. We describe the holmium amplifying medium as a simple homogeneously broadened two-level system, considering only the 5 I 8 − 5 I 7 transition.…”

Section: Comparison With Numerical Modelingmentioning

confidence: 99%

See 2 more Smart Citations

Realization and simulation of high-power holmium doped fiber lasers for long-range transmission

Gouët¹,

Gustave²,

Bourdon³

et al. 2020

Opt. Express

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We report on our realization of a high-power holmium doped fiber laser, together with the validation of our numerical simulation of the laser. We first present the measurements of the physical parameters that are mandatory to model accurately the laser-holmium interactions in our silica fiber. We then describe the realization of the clad-pumped laser, based on a triple-clad large mode area holmium (Ho) doped silica fiber. The output signal power is 90 W at 2120 nm, with an efficiency of about 50% with respect to the coupled pump power. This efficiency corresponds to the state of the art for clad-pumped Ho-doped fiber lasers in the 100 W power class. By comparing the experimental results to our simulation, we demonstrate its validity and use it to show that the efficiency is limited, for our fiber, by the non-saturable absorption caused by pair-induced quenching between adjacent holmium ions.

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Section: Comparison With Numerical Modelingcontrasting

confidence: 54%

Section: Discussion On the Power Limitationmentioning

confidence: 99%

Section: Comparison With Numerical Modelingmentioning

confidence: 99%

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Realization and simulation of high-power holmium doped fiber lasers for long-range transmission

Gouët¹,

Gustave²,

Bourdon³

et al. 2020

Opt. Express

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show abstract

“…As will be introduced, previous experiments performed on in-band core-pumped holmium-doped single-clad fibers indicated that we could obtain very high purity silica core and clad. We estimated there an OH concentration at least one order of magnitude lower compared to the fibers used for state of the art Ho-fiber laser demonstrations [2].…”

mentioning

confidence: 92%

Realization and Numerical Simulation of a High Power and High Efficiency Holmium Doped Fiber Laser at 2.1 μm

Gouët

Gustave

Bourdon

et al. 2019

2019 Conference on Lasers and Electro-Optics Europe &Amp; European Quantum Electronics Conference (CLEO/Europe-EQEC)

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“…Among them, the development of high-power lasers for LIDAR (due to its excellent atmospheric transmission), gas sensing, medicine, material processing, and nonlinear optical conversion in the mid-infrared. [1][2][3][4][5] In this context, many efforts have been made to improve the performance of holmium-doped fiber lasers. One interesting strategy is using a tapered-doped fiber to increase the absorption of the pump along the doped core, which consequently helps improve the power conversion between the pump and signal.…”

Section: Introductionmentioning

confidence: 99%

Thermal effects on tapered holmium-doped fiber amplifiers

et al. 2020

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The temperature response of a tapered holmium-doped fiber amplifier and its impact in the performance of fiber lasers and temperature fiber sensors has numerically been analyzed. Different pump schemes and different longitudinal shapes of the tapered-doped fiber were investigated, and it was found that a parabolic shape of the tapered fiber amplifier in a co-propagating pump scheme shows the highest sensitivity to temperature changes. In particular, the temperature sensitivity of the amplified signal was 2.5 × 10 −4°C for 1 W of pump power and 1 m of doped fiber length. In addition, this sensitivity can be increased up to 10 times for fiber lengths shorter than 1 m and pump powers lower than 300 mW. Our results can be used to describe the temperature response of tapered fiber amplifiers in the mid-infrared spectral region and contribute with new information for the development of fiber lasers and fiber temperature sensors.

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Numerical Modeling of in-Band Pumped Ho-Doped Silica Fiber Lasers

Cited by 40 publications

References 38 publications

Realization and simulation of high-power holmium doped fiber lasers for long-range transmission

Realization and simulation of high-power holmium doped fiber lasers for long-range transmission

Realization and Numerical Simulation of a High Power and High Efficiency Holmium Doped Fiber Laser at 2.1 μm

Thermal effects on tapered holmium-doped fiber amplifiers

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