High-Power Thulium-Doped Fiber MOPA Emitting at 2036 nm

Romano, Clément; Panitzek, Dieter; Lorenz, Dominik; Forster, Patrick; Eichhorn, Marc; Kieleck, Christelle

doi:10.1109/jlt.2023.3310121

Cited by 6 publications

(3 citation statements)

References 21 publications

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“…In these systems, the maximum output power reported in the literature was 567 W at 1.97 µm, achieved by Walbaum et al in 2016 [13]. Master-Oscillator Power Amplifier (MOPA) systems that are composed of a first low-power signal source (single-oscillator laser source or 2 µm diode) and one or more amplification stages were also studied in the literature (black dots in Figure 2) [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]. The highest output power generated in a monolithic MOPA source so far is 1100 W at 1.95 µm reported in 2021 [26].…”

Section: Introductionmentioning

confidence: 99%

“…The kilowatt-level had already been achieved in 2010 by Ehrenreich et al at the output of a monolithic MOPA system [15]. More recently, Romano et al reached 937 W at 2.036 µm at the output of an all-fibered MOPA source [27]. Another solution consists of combining several high-power sources, as seen in Ref.…”

Section: Introductionmentioning

confidence: 99%

“…The two highest output powers reported in the literature were 262 W from a free-space pumping system [40] and 195 W from the only monolithic all-fiber system ever developed [39]. 62 % [28] 57 % [28] 51 % [26] 60 % [34] 55 % [32] 49 % [40] 57 % [27] Tm 49 % [10] 52 % [22] 54 % [21] 49 % [13] 50 % [24] 60 % [8] 54 % [23] 57 % [20] 50 % [18] 50 % [12] 50 % [16] 72 % [14] 62 % [11] 53 % [17] 50 % [9] 62 % [10] 58 % [25] 34 % [38] 47 % [19] 35 % [36] 42 % [35] 45 % [39] 41 % [30] 38 % [31] 49 % [33] 56 % [37] 29 % [40] Figure 2. Comparison of the maximum output power of 2 µm fiber lasers in continuous wave regime demonstrated in the literature, as a function of their emission wavelength.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Emission Wavelength Limits of a Continuous-Wave Thulium-Doped Fiber Laser Source Operating at 1.94 µm, 2.09 µm or 2.12 µm

Louot,

Sanson,

Motard

et al. 2024

Photonics

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We present a thulium-doped single-oscillator monolithic fiber laser emitting successively at three wavelengths, especially at unusual long wavelengths as 2.09 µm and even at 2.12 µm. The 793 nm core absorption of 8.42 dB/m allows for achieving a slope efficiency higher than 43% both at 1.94 µm and 2.09 µm. The operation of the laser at 1.94 µm, 2.09 µm, and 2.12 µm is compared by using different fiber Bragg gratings to push the limit of thulium ions emission above 2.05 µm. This is the first demonstration of emission exceeding wavelengths of 2.1 µm of an only thulium-doped fiber laser, to the best of our knowledge.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Emission Wavelength Limits of a Continuous-Wave Thulium-Doped Fiber Laser Source Operating at 1.94 µm, 2.09 µm or 2.12 µm

Louot,

Sanson,

Motard

et al. 2024

Photonics

View full text Add to dashboard Cite

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Investigation of the polymer material perforation time: comparison between two fiber laser wavelengths

Romano,

Ritt,

Henrichsen

et al. 2024

J Polym Res

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This study investigated the perforation time of polyamide 6.6 using fiber lasers at two different wavelengths: 1070 and 1943 nm. The novelty of this research lies in the comparison of perforation times at equivalent laser irradiances on the polymer sample with two different colors of polyamide 6.6: natural and black. The results revealed that, at comparable irradiance levels and beam diameters, the 1943 nm laser source perforated the polyamide 6.6 sample faster than the 1070 nm laser source. The difference in perforation time was found to be significantly higher for natural-colored polyamide 6.6 compared to black-colored polyamide 6.6. These findings suggest that, for material processing of polyamide 6.6, especially in terms of perforation, the use of 2 μm laser sources should be privileged over 1 μm laser sources.

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Numerical modelling of far-field intensity patterns in coherent beam combining

Picmausová,

Farlik,

Eichhorn

et al. 2024

High-Power Lasers and Technologies for Optical Countermeasures II

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Coherent beam combining (CBC) is one of the novel methods aiming to increase laser output power and intensity, especially in cases where applications require both high power and high beam quality. CBC offers a way of exceeding limitations of a single-fiber laser source, allowing for excellent scalability and high efficiency operation. Simulating and optimizing the intensity of the far-field is crucial when designing a CBC system. This paper focuses on a way of approaching numerical solution of the electric field intensity along the Rayleigh range of multiple Gaussian beams coherently combined over large distances. It aims to circumvent the restrictions of computational capacity faced by most numerical methods when solving for the optical field propagation over large geometries by combining ray and wave optics approach. Output intensity fields for coherent combination of 6, 12, and 20 channels operating at a wavelength of 1550 nm are presented, using a Cassegrain type telescope as beam combiner. Influence of design parameters and near field arrangement is examined and results are compared with previously reported experimental values.

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High-Power Thulium-Doped Fiber MOPA Emitting at 2036 nm

Cited by 6 publications

References 21 publications

Emission Wavelength Limits of a Continuous-Wave Thulium-Doped Fiber Laser Source Operating at 1.94 µm, 2.09 µm or 2.12 µm

Emission Wavelength Limits of a Continuous-Wave Thulium-Doped Fiber Laser Source Operating at 1.94 µm, 2.09 µm or 2.12 µm

Investigation of the polymer material perforation time: comparison between two fiber laser wavelengths

Numerical modelling of far-field intensity patterns in coherent beam combining

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